Quad Cities

Updated: Wikipedia source

Quad Cities

The Quad Cities is a region of five cities (originally Tri-Cities, later four; see § History) in the U.S. states of Iowa and Illinois: Davenport and Bettendorf (the fifth to be included) in southeastern Iowa, and Rock Island, Moline, and East Moline (the fourth to be included) in northwestern Illinois. These cities are the center of the Quad Cities metropolitan area, a region within the Mississippi River Valley, which as of 2023, had a population estimate of 467,817 and a Combined Statistical Area (CSA) population of 474,019, making it the 90th-largest CSA in the nation.

Infobox

State

Iowa Illinois

Country

United States

Time zone

UTC-06:00 (CST)

• Rank

148th in the U.S.

• Total

$25.774 billion (2022)

Largest city

Davenport, Iowa

Other cities

Moline, IllinoisBettendorf, IowaRock Island, IllinoisEast Moline, Illinois

• Density

1,600/sq mi (618/km2)

Lowest elevation

590 ft (180 m)

• Summer (DST)

UTC-05:00 (CDT)

Highest elevation

850 ft (259 m)

Tables

Month

Month

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Month

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Jan

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Feb

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mar

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Apr

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

May

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Jun

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Jul

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Aug

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Sep

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Oct

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Nov

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Dec

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Year

Record high °F (°C)

Record high °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Record high °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

69(21)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

74(23)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

88(31)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

93(34)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

104(40)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

104(40)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

111(44)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

106(41)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

100(38)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

95(35)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

80(27)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

75(24)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

111(44)

Mean maximum °F (°C)

Mean maximum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mean maximum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

53.4(11.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

57.6(14.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

73.6(23.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

82.7(28.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

89.2(31.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

94.0(34.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

95.1(35.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

93.8(34.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

91.2(32.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

84.1(28.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

69.8(21.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

57.6(14.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

96.9(36.1)

Mean daily maximum °F (°C)

Mean daily maximum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mean daily maximum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

31.8(−0.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

36.6(2.6)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

49.9(9.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

63.0(17.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

73.9(23.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

83.1(28.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

86.1(30.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

84.1(28.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

77.9(25.5)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

64.8(18.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

49.8(9.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

37.0(2.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

61.5(16.4)

Daily mean °F (°C)

Daily mean °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Daily mean °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

23.3(−4.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

27.7(−2.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

39.7(4.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

51.4(10.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

62.5(16.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

72.1(22.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

75.5(24.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

73.4(23.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

66.1(18.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

53.7(12.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

40.4(4.7)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

28.9(−1.7)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

51.2(10.7)

Mean daily minimum °F (°C)

Mean daily minimum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mean daily minimum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

14.8(−9.6)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

18.8(−7.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

29.6(−1.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

39.9(4.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

51.1(10.6)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

61.0(16.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

64.9(18.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

62.7(17.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

54.2(12.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

42.6(5.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

30.9(−0.6)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

20.8(−6.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

40.9(4.9)

Mean minimum °F (°C)

Mean minimum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mean minimum °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−9.4(−23.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−2.3(−19.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

9.6(−12.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

24.7(−4.1)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

35.2(1.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

48.0(8.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

54.0(12.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

52.1(11.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

39.1(3.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

26.3(−3.2)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

14.1(−9.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−0.2(−17.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−14.2(−25.7)

Record low °F (°C)

Record low °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Record low °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−33(−36)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−28(−33)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−19(−28)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

7(−14)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

25(−4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

39(4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

46(8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

40(4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

24(−4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

11(−12)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−10(−23)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−24(−31)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

−33(−36)

Average precipitation inches (mm)

Average precipitation inches (mm)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average precipitation inches (mm)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

1.66(42)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

1.83(46)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2.62(67)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

3.81(97)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

4.67(119)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

5.01(127)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

4.23(107)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

3.97(101)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

3.32(84)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2.81(71)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2.30(58)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2.04(52)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

38.27(972)

Average snowfall inches (cm)

Average snowfall inches (cm)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average snowfall inches (cm)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

10.8(27)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.6(22)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

4.4(11)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

1.1(2.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0(0.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0(0.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0(0.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0(0.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0(0.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.3(0.76)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2.1(5.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.8(22)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

36.1(92)

Average precipitation days (≥ 0.01 in)

Average precipitation days (≥ 0.01 in)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average precipitation days (≥ 0.01 in)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

9.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.7

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

10.4

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

11.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

12.2

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

11.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.6

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

9.4

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.4

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

9.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

8.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

9.5

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

117.0

Average snowy days (≥ 0.1 in)

Average snowy days (≥ 0.1 in)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average snowy days (≥ 0.1 in)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

7.2

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

6.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

3.2

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.8

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

0.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

1.7

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

5.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

25.1

Average relative humidity (%)

Average relative humidity (%)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average relative humidity (%)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

69.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

69.8

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

68.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

64.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

64.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

65.8

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

70.5

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

73.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

72.8

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

68.1

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

71.3

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

74.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

69.4

Average dew point °F (°C)

Average dew point °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Average dew point °F (°C)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

11.7(−11.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

16.2(−8.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

27.0(−2.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

37.2(2.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

48.2(9.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

57.9(14.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

64.0(17.8)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

62.6(17.0)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

54.3(12.4)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

41.5(5.3)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

30.4(−0.9)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

18.3(−7.6)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

39.1(3.9)

Mean monthly sunshine hours

Mean monthly sunshine hours

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Mean monthly sunshine hours

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

148.1

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

153.8

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

180.5

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

210.1

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

255.1

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

284.6

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

301.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

271.4

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

222.0

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

192.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

121.7

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

113.9

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

2,456

Percentage possible sunshine

Percentage possible sunshine

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Percentage possible sunshine

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

50

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

52

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

49

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

53

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

57

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

63

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

66

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

63

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

59

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

56

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

41

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

40

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

55

Source: NOAA (relative humidity, dew point, and sun 1961−1990)

Source: NOAA (relative humidity, dew point, and sun 1961−1990)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present

Source: NOAA (relative humidity, dew point, and sun 1961−1990)

Climate data for Quad Cities (Quad City International Airport), 1991–2020 normals, extremes 1871–present
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Record high °F (°C)	69(21)	74(23)	88(31)	93(34)	104(40)	104(40)	111(44)	106(41)	100(38)	95(35)	80(27)	75(24)	111(44)
Mean maximum °F (°C)	53.4(11.9)	57.6(14.2)	73.6(23.1)	82.7(28.2)	89.2(31.8)	94.0(34.4)	95.1(35.1)	93.8(34.3)	91.2(32.9)	84.1(28.9)	69.8(21.0)	57.6(14.2)	96.9(36.1)
Mean daily maximum °F (°C)	31.8(−0.1)	36.6(2.6)	49.9(9.9)	63.0(17.2)	73.9(23.3)	83.1(28.4)	86.1(30.1)	84.1(28.9)	77.9(25.5)	64.8(18.2)	49.8(9.9)	37.0(2.8)	61.5(16.4)
Daily mean °F (°C)	23.3(−4.8)	27.7(−2.4)	39.7(4.3)	51.4(10.8)	62.5(16.9)	72.1(22.3)	75.5(24.2)	73.4(23.0)	66.1(18.9)	53.7(12.1)	40.4(4.7)	28.9(−1.7)	51.2(10.7)
Mean daily minimum °F (°C)	14.8(−9.6)	18.8(−7.3)	29.6(−1.3)	39.9(4.4)	51.1(10.6)	61.0(16.1)	64.9(18.3)	62.7(17.1)	54.2(12.3)	42.6(5.9)	30.9(−0.6)	20.8(−6.2)	40.9(4.9)
Mean minimum °F (°C)	−9.4(−23.0)	−2.3(−19.1)	9.6(−12.4)	24.7(−4.1)	35.2(1.8)	48.0(8.9)	54.0(12.2)	52.1(11.2)	39.1(3.9)	26.3(−3.2)	14.1(−9.9)	−0.2(−17.9)	−14.2(−25.7)
Record low °F (°C)	−33(−36)	−28(−33)	−19(−28)	7(−14)	25(−4)	39(4)	46(8)	40(4)	24(−4)	11(−12)	−10(−23)	−24(−31)	−33(−36)
Average precipitation inches (mm)	1.66(42)	1.83(46)	2.62(67)	3.81(97)	4.67(119)	5.01(127)	4.23(107)	3.97(101)	3.32(84)	2.81(71)	2.30(58)	2.04(52)	38.27(972)
Average snowfall inches (cm)	10.8(27)	8.6(22)	4.4(11)	1.1(2.8)	0.0(0.0)	0.0(0.0)	0.0(0.0)	0.0(0.0)	0.0(0.0)	0.3(0.76)	2.1(5.3)	8.8(22)	36.1(92)
Average precipitation days (≥ 0.01 in)	9.3	8.7	10.4	11.3	12.2	11.3	8.6	9.4	8.4	9.0	8.9	9.5	117.0
Average snowy days (≥ 0.1 in)	7.2	6.0	3.2	0.8	0.0	0.0	0.0	0.0	0.0	0.3	1.7	5.9	25.1
Average relative humidity (%)	69.9	69.8	68.3	64.3	64.9	65.8	70.5	73.3	72.8	68.1	71.3	74.0	69.4
Average dew point °F (°C)	11.7(−11.3)	16.2(−8.8)	27.0(−2.8)	37.2(2.9)	48.2(9.0)	57.9(14.4)	64.0(17.8)	62.6(17.0)	54.3(12.4)	41.5(5.3)	30.4(−0.9)	18.3(−7.6)	39.1(3.9)
Mean monthly sunshine hours	148.1	153.8	180.5	210.1	255.1	284.6	301.9	271.4	222.0	192.9	121.7	113.9	2,456
Percentage possible sunshine	50	52	49	53	57	63	66	63	59	56	41	40	55
Source: NOAA (relative humidity, dew point, and sun 1961−1990)

· Metropolitan area › Population by County

1

1

2020 rank

1

State

Iowa

County

Scott

2020 Census

174,669

2010 Census

165,224

Change

+5.72%

2

2

2020 rank

2

State

Illinois

County

Rock Island

2020 Census

144,672

2010 Census

147,546

Change

−1.95%

3

3

2020 rank

3

State

Illinois

County

Henry

2020 Census

49,284

2010 Census

50,486

Change

−2.38%

4

4

2020 rank

4

State

Illinois

County

Mercer

2020 Census

15,699

2010 Census

16,434

Change

−4.47%

Metro

Metro

2020 rank

Metro

State

Iowa, Illinois

County

Scott, Rock Island, Henry, Mercer

2020 Census

384,324

2010 Census

379,690

Change

+1.22%

2020 rank	State	County	2020 Census	2010 Census	Change
1	Iowa	Scott	174,669	165,224	+5.72%
2	Illinois	Rock Island	144,672	147,546	−1.95%
3	Illinois	Henry	49,284	50,486	−2.38%
4	Illinois	Mercer	15,699	16,434	−4.47%
Metro	Iowa, Illinois	Scott, Rock Island, Henry, Mercer	384,324	379,690	+1.22%

· Metropolitan area › Population by City

1

1

2020 rank

1

City

Davenport

State

Iowa

County

Scott

2020 Census

101,724

2010 Census

99,685

Change

+2.05%

2

2

2020 rank

2

City

Moline

State

Illinois

County

Rock Island

2020 Census

42,985

2010 Census

43,483

Change

−1.15%

3

3

2020 rank

3

City

Bettendorf

State

Iowa

County

Scott

2020 Census

39,102

2010 Census

33,217

Change

+17.72%

4

4

2020 rank

4

City

Rock Island

State

Illinois

County

Rock Island

2020 Census

37,108

2010 Census

39,018

Change

−4.90%

5

5

2020 rank

5

City

East Moline

State

Illinois

County

Rock Island

2020 Census

21,374

2010 Census

21,302

Change

+0.34%

6

6

2020 rank

6

City

Silvis

State

Illinois

County

Rock Island

2020 Census

8,003

2010 Census

7,479

Change

+7.01%

7

7

2020 rank

7

City

Eldridge

State

Iowa

County

Scott

2020 Census

6,726

2010 Census

5,651

Change

+19.02%

8

8

2020 rank

8

City

Geneseo

State

Illinois

County

Henry

2020 Census

6,539

2010 Census

6,586

Change

−0.71%

9

9

2020 rank

9

City

Milan

State

Illinois

County

Rock Island

2020 Census

5,097

2010 Census

5,099

Change

−0.04%

10

10

2020 rank

10

City

Colona

State

Illinois

County

Henry

2020 Census

5,045

2010 Census

5,099

Change

−1.06%

11

11

2020 rank

11

City

Le Claire

State

Iowa

County

Scott

2020 Census

4,710

2010 Census

3,765

Change

+25.10%

12

12

2020 rank

12

City

Coal Valley

State

Illinois

County

Rock Island, Henry

2020 Census

3,873

2010 Census

3,743

Change

+3.47%

13

13

2020 rank

13

City

Aledo

State

Illinois

County

Mercer

2020 Census

3,633

2010 Census

3,640

Change

−0.19%

14

14

2020 rank

14

City

Park View

State

Iowa

County

Scott

2020 Census

2,709

2010 Census

2,389

Change

+13.39%

15

15

2020 rank

15

City

Cambridge

State

Illinois

County

Henry

2020 Census

2,086

2010 Census

2,160

Change

−3.43%

16

16

2020 rank

16

City

Carbon Cliff

State

Illinois

County

Rock Island

2020 Census

1,846

2010 Census

2,134

Change

−13.50%

17

17

2020 rank

17

City

Hampton

State

Illinois

County

Rock Island

2020 Census

1,779

2010 Census

1,863

Change

−4.51%

18

18

2020 rank

18

City

Orion

State

Illinois

County

Henry

2020 Census

1,754

2010 Census

1,861

Change

−5.75%

19

19

2020 rank

19

City

Port Byron

State

Illinois

County

Rock Island

2020 Census

1,668

2010 Census

1,647

Change

+1.28%

20

20

2020 rank

20

City

Blue Grass

State

Iowa

County

Scott, Muscatine

2020 Census

1,666

2010 Census

1,452

Change

+14.74%

21

21

2020 rank

21

City

Walcott

State

Iowa

County

Scott

2020 Census

1,551

2010 Census

1,629

Change

−4.79%

22

22

2020 rank

22

City

Andalusia

State

Illinois

County

Rock Island

2020 Census

1,184

2010 Census

1,178

Change

+0.51%

23

23

2020 rank

23

City

Buffalo

State

Iowa

County

Scott

2020 Census

1,176

2010 Census

1,270

Change

−7.40%

24

24

2020 rank

24

City

Atkinson

State

Illinois

County

Henry

2020 Census

965

2010 Census

972

Change

−0.72%

25

25

2020 rank

25

City

Rapids City

State

Illinois

County

Rock Island

2020 Census

964

2010 Census

959

Change

+0.52%

26

26

2020 rank

26

City

Princeton

State

Iowa

County

Scott

2020 Census

923

2010 Census

886

Change

+4.18%

27

27

2020 rank

27

City

Annawan

State

Illinois

County

Henry

2020 Census

884

2010 Census

878

Change

+0.68%

28

28

2020 rank

28

City

Coyne Center

State

Illinois

County

Rock Island

2020 Census

877

2010 Census

0

Change

NA

29

29

2020 rank

29

City

Viola

State

Illinois

County

Mercer

2020 Census

869

2010 Census

955

Change

−9.01%

30

30

2020 rank

30

City

Long Grove

State

Iowa

County

Scott

2020 Census

838

2010 Census

808

Change

+3.71%

31

31

2020 rank

31

City

Matherville

State

Illinois

County

Mercer

2020 Census

707

2010 Census

723

Change

−2.21%

32

32

2020 rank

32

City

Sherrard

State

Illinois

County

Mercer

2020 Census

692

2010 Census

640

Change

+8.13%

33

33

2020 rank

33

City

Cordova

State

Illinois

County

Rock Island

2020 Census

671

2010 Census

672

Change

−0.15%

34

34

2020 rank

34

City

Andover

State

Illinois

County

Henry

2020 Census

555

2010 Census

578

Change

−3.98%

35

35

2020 rank

35

City

Reynolds

State

Illinois

County

Rock Island, Mercer

2020 Census

498

2010 Census

539

Change

−7.61%

36

36

2020 rank

36

City

Oak Grove

State

Illinois

County

Rock Island

2020 Census

476

2010 Census

396

Change

+20.20%

37

37

2020 rank

37

City

Hillsdale

State

Illinois

County

Rock Island

2020 Census

417

2010 Census

523

Change

−20.27%

38

38

2020 rank

38

City

Edgington

State

Illinois

County

Rock Island

2020 Census

391

2010 Census

0

Change

NA

39

39

2020 rank

39

City

Riverdale

State

Iowa

County

Scott

2020 Census

379

2010 Census

405

Change

−6.42%

40

40

2020 rank

40

City

Donahue

State

Iowa

County

Scott

2020 Census

335

2010 Census

346

Change

−3.18%

41

41

2020 rank

41

City

McCausland

State

Iowa

County

Scott

2020 Census

313

2010 Census

291

Change

+7.56%

42

42

2020 rank

42

City

Campbell's Island

State

Illinois

County

Rock Island

2020 Census

275

2010 Census

0

Change

NA

43

43

2020 rank

43

City

Preemption

State

Illinois

County

Mercer

2020 Census

254

2010 Census

0

Change

NA

44

44

2020 rank

44

City

Dixon

State

Iowa

County

Scott

2020 Census

202

2010 Census

247

Change

−18.22%

45

45

2020 rank

45

City

Montpelier

State

Iowa

County

Scott, Muscatine

2020 Census

186

2010 Census

0

Change

NA

46

46

2020 rank

46

City

Rock Island Arsenal

State

Illinois

County

Rock Island

2020 Census

182

2010 Census

149

Change

+22.15%

47

47

2020 rank

47

City

Cleveland

State

Illinois

County

Henry

2020 Census

163

2010 Census

188

Change

−13.30%

48

48

2020 rank

48

City

North Henderson

State

Illinois

County

Mercer

2020 Census

162

2010 Census

187

Change

−13.37%

49

49

2020 rank

49

City

Illinois City

State

Illinois

County

Rock Island

2020 Census

159

2010 Census

0

Change

NA

50

50

2020 rank

50

City

Maysville

State

Iowa

County

Scott

2020 Census

156

2010 Census

176

Change

−11.36%

51

51

2020 rank

51

City

Taylor Ridge

State

Illinois

County

Rock Island

2020 Census

141

2010 Census

0

Change

NA

52

52

2020 rank

52

City

Panorama Park

State

Iowa

County

Scott

2020 Census

139

2010 Census

129

Change

+7.75%

53

53

2020 rank

53

City

New Liberty

State

Iowa

County

Scott

2020 Census

138

2010 Census

137

Change

+0.73%

54

54

2020 rank

54

City

Ophiem

State

Illinois

County

Henry

2020 Census

123

2010 Census

0

Change

NA

55

55

2020 rank

55

City

Osco

State

Illinois

County

Henry

2020 Census

108

2010 Census

0

Change

NA

56

56

2020 rank

56

City

Barstow

State

Illinois

County

Rock Island

2020 Census

89

2010 Census

0

Change

NA

57

57

2020 rank

57

City

Lynn Center

State

Illinois

County

Henry

2020 Census

85

2010 Census

0

Change

NA

58

58

2020 rank

58

City

Joslin

State

Illinois

County

Rock Island

2020 Census

85

2010 Census

0

Change

NA

59

59

2020 rank

59

City

Buffalo Prairie

State

Illinois

County

Rock Island

2020 Census

64

2010 Census

0

Change

NA

60

60

2020 rank

60

City

Big Rock

State

Iowa

County

Scott, Clinton

2020 Census

49

2010 Census

0

Change

NA

61

61

2020 rank

61

City

Argo

State

Iowa

County

Scott

2020 Census

44

2010 Census

0

Change

NA

62

62

2020 rank

62

City

Nekoma

State

Illinois

County

Henry

2020 Census

23

2010 Census

0

Change

NA

63

63

2020 rank

63

City

Plainview

State

Iowa

County

Scott

2020 Census

19

2010 Census

0

Change

NA

2020 rank	City	State	County	2020 Census	2010 Census	Change
1	Davenport	Iowa	Scott	101,724	99,685	+2.05%
2	Moline	Illinois	Rock Island	42,985	43,483	−1.15%
3	Bettendorf	Iowa	Scott	39,102	33,217	+17.72%
4	Rock Island	Illinois	Rock Island	37,108	39,018	−4.90%
5	East Moline	Illinois	Rock Island	21,374	21,302	+0.34%
6	Silvis	Illinois	Rock Island	8,003	7,479	+7.01%
7	Eldridge	Iowa	Scott	6,726	5,651	+19.02%
8	Geneseo	Illinois	Henry	6,539	6,586	−0.71%
9	Milan	Illinois	Rock Island	5,097	5,099	−0.04%
10	Colona	Illinois	Henry	5,045	5,099	−1.06%
11	Le Claire	Iowa	Scott	4,710	3,765	+25.10%
12	Coal Valley	Illinois	Rock Island, Henry	3,873	3,743	+3.47%
13	Aledo	Illinois	Mercer	3,633	3,640	−0.19%
14	Park View	Iowa	Scott	2,709	2,389	+13.39%
15	Cambridge	Illinois	Henry	2,086	2,160	−3.43%
16	Carbon Cliff	Illinois	Rock Island	1,846	2,134	−13.50%
17	Hampton	Illinois	Rock Island	1,779	1,863	−4.51%
18	Orion	Illinois	Henry	1,754	1,861	−5.75%
19	Port Byron	Illinois	Rock Island	1,668	1,647	+1.28%
20	Blue Grass	Iowa	Scott, Muscatine	1,666	1,452	+14.74%
21	Walcott	Iowa	Scott	1,551	1,629	−4.79%
22	Andalusia	Illinois	Rock Island	1,184	1,178	+0.51%
23	Buffalo	Iowa	Scott	1,176	1,270	−7.40%
24	Atkinson	Illinois	Henry	965	972	−0.72%
25	Rapids City	Illinois	Rock Island	964	959	+0.52%
26	Princeton	Iowa	Scott	923	886	+4.18%
27	Annawan	Illinois	Henry	884	878	+0.68%
28	Coyne Center	Illinois	Rock Island	877	0	NA
29	Viola	Illinois	Mercer	869	955	−9.01%
30	Long Grove	Iowa	Scott	838	808	+3.71%
31	Matherville	Illinois	Mercer	707	723	−2.21%
32	Sherrard	Illinois	Mercer	692	640	+8.13%
33	Cordova	Illinois	Rock Island	671	672	−0.15%
34	Andover	Illinois	Henry	555	578	−3.98%
35	Reynolds	Illinois	Rock Island, Mercer	498	539	−7.61%
36	Oak Grove	Illinois	Rock Island	476	396	+20.20%
37	Hillsdale	Illinois	Rock Island	417	523	−20.27%
38	Edgington	Illinois	Rock Island	391	0	NA
39	Riverdale	Iowa	Scott	379	405	−6.42%
40	Donahue	Iowa	Scott	335	346	−3.18%
41	McCausland	Iowa	Scott	313	291	+7.56%
42	Campbell's Island	Illinois	Rock Island	275	0	NA
43	Preemption	Illinois	Mercer	254	0	NA
44	Dixon	Iowa	Scott	202	247	−18.22%
45	Montpelier	Iowa	Scott, Muscatine	186	0	NA
46	Rock Island Arsenal	Illinois	Rock Island	182	149	+22.15%
47	Cleveland	Illinois	Henry	163	188	−13.30%
48	North Henderson	Illinois	Mercer	162	187	−13.37%
49	Illinois City	Illinois	Rock Island	159	0	NA

· Top employers

1

1

Rank

1

Employer

Deere & Company

# of employees

6,700

Industry

Agricultural Innovation

2

2

Rank

2

Employer

Rock Island Arsenal

# of employees

6,300

Industry

Defense Manufacturing

3

3

Rank

3

Employer

UnityPoint Health - Trinity

# of employees

6,100

Industry

Healthcare

4

4

Rank

4

Employer

Genesis Health System

# of employees

4,700

Industry

Healthcare

5

5

Rank

5

Employer

Hy-Vee

# of employees

4,200

Industry

Grocery

6

6

Rank

6

Employer

Walmart

# of employees

3,600

Industry

Warehouse Clubs and Supercenters

7

7

Rank

7

Employer

HNI Corporation/The Hon Company/Allsteel

# of employees

3,100

Industry

Office Furniture Manufacturing

8

8

Rank

8

Employer

Arconic

# of employees

2,400

Industry

Aerospace and Defense Aluminum

*

*

Rank

*

Employer

Tyson Fresh Meats

# of employees

2,400

Industry

Food Processing

10

10

Rank

10

Employer

Amazon

# of employees

1,500

Industry

Conglomerate

Rank	Employer	# of employees	Industry
1	Deere & Company	6,700	Agricultural Innovation
2	Rock Island Arsenal	6,300	Defense Manufacturing
3	UnityPoint Health - Trinity	6,100	Healthcare
4	Genesis Health System	4,700	Healthcare
5	Hy-Vee	4,200	Grocery
6	Walmart	3,600	Warehouse Clubs and Supercenters
7	HNI Corporation/The Hon Company/Allsteel	3,100	Office Furniture Manufacturing
8	Arconic	2,400	Aerospace and Defense Aluminum
*	Tyson Fresh Meats	2,400	Food Processing
10	Amazon	1,500	Conglomerate

· Sports › Sports teams

Quad Cities River Bandits

Quad Cities River Bandits

Club

Quad Cities River Bandits

Sport

Baseball

League

Midwest League

Venue

Modern Woodmen Park

Established

1960

Championships

6

Quad City Steamwheelers

Quad City Steamwheelers

Club

Quad City Steamwheelers

Sport

Indoor football

League

IFL

Venue

Vibrant Arena at The MARK

Established

2017

Championships

0

Quad City Storm

Quad City Storm

Club

Quad City Storm

Sport

Ice hockey

League

SPHL

Venue

Vibrant Arena at The MARK

Established

2018

Championships

0

Club	Sport	League	Venue	Established	Championships
Quad Cities River Bandits	Baseball	Midwest League	Modern Woodmen Park	1960	6
Quad City Steamwheelers	Indoor football	IFL	Vibrant Arena at The MARK	2017	0
Quad City Storm	Ice hockey	SPHL	Vibrant Arena at The MARK	2018	0

References

Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year o
Official precipitation records for the Quad Cities kept at the Weather Bureau Office (WBO) in Davenport, Iowa from July
http://threadex.rcc-acis.org
Federal Reserve Economic Data
https://fred.stlouisfed.org/series/NGMP19340
"Welcome to the Quad Cities"
http://www.quadcities.com/
"Community Visitor Information"
https://web.archive.org/web/20071214222307/http://www.quadcitychamber.com/visitor/
The New York Times
https://query.nytimes.com/gst/fullpage.html?res=9B0DE3DD1531F933A15753C1A961948260
"Why Quad Cities"
https://web.archive.org/web/20160119074525/http://www.quadcitieschamber.com/why-quad-cities
List of Combined Statistical Areas
2011 Population Estimates
https://web.archive.org/web/20120427231227/http://www.census.gov/popest/data/metro/totals/2011/tables/CBSA-EST2011-01.csv
2012 Population Estimates
https://web.archive.org/web/20130501135333/http://www.census.gov/popest/data/metro/totals/2012/files/CBSA-EST2012-alldata.csv
Joined by a River: The Quad Cities, Lee Enterprises, Inc., 1982, p. 16
National Archives
https://www.archives.gov/publications/prologue/2004/summer/bridge.html#:~:text=On%20April%2022%2C%201856%2C%20the,bridge%20over%20the%20Mississippi%20River.
"About"
http://www.quadcities.com/about
Quad Cities Chamber
http://quadcitieschamber.com/
"Cities"
https://web.archive.org/web/20180726071859/https://www.quadcities.com/city/
"CNN; Where homes are affordable"
https://money.cnn.com/galleries/2007/moneymag/0707/gallery.BPTL_most_affordable.moneymag
Forbes
https://www.forbes.com/places/ia/davenport/
Yahoo Finance
https://finance.yahoo.com/news/5-markets-beating-the-housing-bust.html
The Quad-City Times
https://qctimes.com/business/study-q-c-makes-strides-in-high-tech-jobs/article_539bdaea-4027-11e2-8ab4-0019bb2963f4.html
Minor League Baseball
https://www.milb.com/news/gcs-56957458
Chicago Tribune
https://www.chicagotribune.com/news/ct-xpm-1987-08-19-8703050010-story.html
Dispatch-Argus
https://qconline.com/news/local/moline-east-moline-discuss-merger/article_9585ac15-beeb-5d74-a499-5409845cd755.html
Quad City Times
https://qctimes.com/news/local/years-later-merger-best-for-green-rock-colona/article_be2140a6-7f4d-5ee6-8d23-09c2b322c55f.html
America 2050: Megaregions: Great Lakes. Archived 2020-02-20 at the Wayback Machine Regional Plan Association.
http://www.america2050.org/great_lakes.html
Regional Plan Association (2008). America 2050: An Infrastructure Vision for 21st Century America. New York: Regional Pl
"NowData – NOAA Online Weather Data"
https://www.weather.gov/wrh/Climate?wfo=dvn
U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020)
https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00014923&format=pdf
"WMO Climate Normals for MOLINE/QUAD CITY, IL 1961–1990". National Oceanic and Atmospheric Administration. Retrieved June 25, 2021.
"American FactFinder"
http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_PL_GCTPL2.ST05&prodType=table
https://www.quadcitieschamber.com/Quad[permanent dead link] Cities Chamber-Quad Cities Demographics.pdf
https://www.quadcitieschamber.com/Quad
davenport.areaconnect.com
https://web.archive.org/web/20220329014510/https://davenport.areaconnect.com/statistics.htm
bettendorf.areaconnect.com
https://web.archive.org/web/20220317144400/https://bettendorf.areaconnect.com/statistics.htm
rockisland.areaconnect.com
https://web.archive.org/web/20220128224426/https://rockisland.areaconnect.com/statistics.htm
molineil.areaconnect.com
https://web.archive.org/web/20220330072155/https://molineil.areaconnect.com/statistics.htm
Quad City Times
https://qctimes.com/jews-in-the-quad-cities/article
Great Lakes Megalopolis
"City and Town Population Totals: 2010-2019"
https://www.census.gov/data/tables/time-series/demo/popest/2010s-total-cities-and-towns.html
"City and Town Population Totals: 2010-2019"
https://www.census.gov/data/tables/time-series/demo/popest/2010s-total-cities-and-towns.html
The Quad-City Times
https://qctimes.com/news/local/tv-show-to-feature-ri-auction-business/article_a080b702-1b18-11e1-88c0-001cc4c03286.html?oCampaign=hottopics
River City Reader
https://web.archive.org/web/20190730080809/https://www.rcreader.com/art/art-quick-and-dead-exploring-sculptures-quad-cities-cemeteries
"City of East Moline"
https://web.archive.org/web/20100313010559/http://www.eastmoline.com/Mayor.cfm
"Major Employers | Largest Corporations | QC First"
https://quadcitieschamber.com/regional-data/largest-employers/
"Playcrafters Barn Theatre – Community theater for the Quad-Cities"
https://web.archive.org/web/20150513041740/http://www.playcrafters.com/history.php
The Quad-City Times
https://qctimes.com/community/bettendorf/nothing-is-quiet-about-the-lives-of-filmmakers-from-bettendorf/article_682edbe0-ffeb-52f0-9c2a-9ab9a845278e.html
qconline.com
https://qconline.com/news/local/new-farrelly-brothers-streaming-series-shot-in-several-quad-cities-locations/article_8258b774-e136-5d25-8577-ea3d69c74c87.html
"Market Survey Schedule & Population Rankings"
https://web.archive.org/web/20111015200901/http://arbitron.com/downloads/redbook_fa11.pdf
"Nielsen Local Television Market Universe Estimates"
https://web.archive.org/web/20120401072025/http://tvbythenumbers.zap2it.com/2008/09/10/nielsen-local-television-market-universe-estimates/5037/
"Bridges: Iowa, Illinois order safety inspections"
https://qctimes.com/news/local/bridges-iowa-illinois-order-safety-inspections/article_b0241d1b-06db-5cd7-b58e-35588dccc039.html
Quad-City Times
https://www.qctimes.com/news/opinion/editorial/columnists/alma-gaul/article_7311518b-a2e5-58d5-b82e-4de48362f0c2.html
"Quad-City rail project to get $230 million"
https://qctimes.com/news/local/article_ca36f2b2-e065-11df-8f4d-001cc4c03286.html
Chicago Tribune
https://www.chicagotribune.com/news/columnists/wisniewski/ct-biz-train-amtrak-quad-cities-dubuque-rockford20181115-story.html
WQAD Channel 8 News
https://wqad.com/2017/08/03/an-in-depth-look-at-the-chicago-to-qc-amtrak-project-whats-taking-so-long/
Moline, IL Official Website
https://www.moline.il.us/1364/Element-WestinThe-Q
QC Marathon
http://qcmarathon.org
The Dispatch / The Rock Island Argus
https://qctimes.com/sports/hockey/professional/minor/storm-s-a-coming-quad-cities-hockey-franchise-unveils-new/article_770dc340-c012-507f-be10-9ce1ac745402.html
Nebraska.tv
https://nebraska.tv/sports/content/quad-city-steamwheelers-join-the-ifl-for-2019-season
"ABOUT – Quad City Raiders"
https://web.archive.org/web/20160305075843/http://qcraiders.com/about/