Water Temperature of the Mississippi River in Rock Island, IL

Current Water Temperature

32.0°F

Measurement Time: Sunday, December 14, 2025, 9:00 AM CST

Temperature Locations

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Local Points of Interest

Davenport, IA; Arsenal Island

Mississippi River

Station Name: Rock Island L&D 15
Data Source: USGS

Elevation Above Sea Level: 555 feet

Nearest Address:
Rodman Avenue
Rock Island, IL 52801
Rock Island County

GPS Coordinates: 41.5181, -90.5647

Nearby Water Temperatures

Mississippi River, Le Claire, IA (9.3 mi)
Mississippi River, Illinois City, IL (23.9 mi)
Mississippi River, Camanche, IA (24.3 mi)
Beaver Slough, Clinton, IA (28.8 mi)
Mississippi River, Fulton, IL (33.4 mi)
Mississippi River, Fulton, IL (33.7 mi)
Mississippi River, New Boston, IL (34.1 mi)
North Fork Maquoketa River, Maquoketa, IA (45.4 mi)
Mississippi River, Gladstone, IL (50 mi)
Mississippi River, Bellevue, IA (51.8 mi)
Illinois River, Henry, IL (68.8 mi)
Morgan Creek, Cedar Rapids, IA (69.7 mi)
Mississippi River, Dubuque, IA (70.7 mi)
Cedar River, Palo, IA (73.5 mi)
Illinois River, Peoria, IL (78.3 mi)

Weather for Rock Island, Illinois

Current Weather

78.1°F
Clear
Clear
83.4°F
78.8°F
90%
S 9.4 mph
19.7 mph
74.8°F
71°F
0 in
0%
9 mi
1010 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 100°F
L: 74°F
Sunny
Tue
H: 90°F
L: 73°F
Sunny
Wed
H: 90°F
L: 74°F
Sunny
Thu
H: 91°F
L: 73°F
Sunny
Fri
H: 91°F
L: 69°F

Air Quality

PM2.5: 6.7 μg/m3
PM10: 7.2 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:05 PM
Sunset: 8:41 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:00 PM
Moon Transit: 12:28 AM
Moonset: 4:46 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:19 AM - 2:49 PM

Minor Periods

8:30 PM - 10:00 PM
4:16 AM - 5:46 AM

Action Rating: 5 out of 5

Heat Advisory issued June 28 at 1:42PM CDT until June 28 at 7:00PM CDT by NWS Lincoln IL

Effective: Sun June 28, 2026, 1:42 PM
Expires: Mon June 29, 2026, 4:30 AM

* WHAT...Heat index values near 105. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...For the first Heat Advisory, until 7 PM CDT this evening. For the second Heat Advisory, from 11 AM Monday to midnight CDT Thursday Night. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.


Heat Advisory issued June 28 at 1:42PM CDT until July 3 at 12:00AM CDT by NWS Lincoln IL

Effective: Sun June 28, 2026, 1:42 PM
Expires: Mon June 29, 2026, 4:30 AM

* WHAT...Heat index values near 105. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...For the first Heat Advisory, until 7 PM CDT this evening. For the second Heat Advisory, from 11 AM Monday to midnight CDT Thursday Night. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.


Heat Advisory issued June 29 at 2:52AM CDT until July 3 at 12:00AM CDT by NWS Lincoln IL

Effective: Mon June 29, 2026, 2:52 AM
Expires: Mon June 29, 2026, 4:00 PM

* WHAT...Heat index values 105 to 110 expected. * WHERE...All of central and southeast Illinois. * WHEN...From 11 AM this morning to midnight CDT Thursday Night. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Monday, June 29, 2026

Weather Forecast

Sunny
99.7°F
74.1°F
84.5°F
76%
0 in
8%
0%
16.6 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 6.53 μg/m3
PM10: 7.5 μg/m3
Carbon Monoxide: 115.13 μg/m3
Nitrogen Dioxide: 3.19 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 69.83 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:05 PM
Sunset: 8:41 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:00 PM
Moon Transit: 12:28 AM
Moonset: 4:46 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:19 AM - 2:49 PM

Minor Periods

8:30 PM - 10:00 PM
4:16 AM - 5:46 AM

Action Rating: 5 out of 5

Tuesday, June 30, 2026

Weather Forecast

Sunny
90.2°F
72.8°F
81.6°F
79%
0 in
9%
0%
15.7 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 14.85 μg/m3
PM10: 22.11 μg/m3
Carbon Monoxide: 115.92 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 73.79 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:06 PM
Sunset: 8:40 PM
Daylight: 15 hrs 9 mins
Moonrise: 9:39 PM
Moon Transit: 1:20 AM
Moonset: 5:43 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:50 AM - 3:20 AM
1:10 PM - 3:40 PM

Minor Periods

9:09 PM - 10:39 PM
5:13 AM - 6:43 AM

Action Rating: 5 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
90.1°F
73.7°F
81.5°F
80%
0 in
9%
0%
13.4 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 12.2 μg/m3
PM10: 17.3 μg/m3
Carbon Monoxide: 131.53 μg/m3
Nitrogen Dioxide: 3.31 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 78.5 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:06 PM
Sunset: 8:40 PM
Daylight: 15 hrs 8 mins
Moonrise: 10:11 PM
Moon Transit: 2:09 AM
Moonset: 6:46 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:39 AM - 4:09 AM
1:59 PM - 4:29 PM

Minor Periods

9:41 PM - 11:11 PM
6:16 AM - 7:46 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
90.8°F
73.2°F
81.8°F
76%
0.01 in
21%
0%
16.1 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 6.07 μg/m3
PM10: 7.24 μg/m3
Carbon Monoxide: 184.7 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 76.6 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:06 PM
Sunset: 8:40 PM
Daylight: 15 hrs 8 mins
Moonrise: 10:38 PM
Moon Transit: 2:57 AM
Moonset: 7:51 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
2:45 PM - 5:15 PM

Minor Periods

10:08 PM - 11:38 PM
7:21 AM - 8:51 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
91°F
69.2°F
80.3°F
77%
0 in
8%
0%
12.3 mph
8


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:06 PM
Sunset: 8:40 PM
Daylight: 15 hrs 7 mins
Moonrise: 11:02 PM
Moon Transit: 3:42 AM
Moonset: 8:56 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
3:30 PM - 6:00 PM

Minor Periods

12:00 AM - 12:00 AM
8:26 AM - 9:56 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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