Water Temperature of the Illinois River in Florence, IL

Current Water Temperature

80.1°F

Measurement Time: Tuesday, August 4, 2026, 10:15 PM CDT

Temperature Locations

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Local Points of Interest

Florence Bridge

Illinois River

Station Name: ILLINOIS RIVER AT FLORENCE, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 427 feet

Nearest Address:
State Rte 100
Florence, IL 62363
Pike County

GPS Coordinates: 39.63277778, -90.6077778

Nearby Water Temperatures

Illinois River, La Grange, IL (21.6 mi)
Mississippi River, Clarksville, MO (23.9 mi)
Mississippi River, Saverton, MO (34.1 mi)
Mississippi River, Cap Au Gris, MO (43.7 mi)
Mississippi River, Quincy, IL (47.4 mi)
Lick Creek, Springfield, IL (48.5 mi)
Sugar Creek, Chatham, IL (50.5 mi)
Mississippi River, Alton, IL (58.4 mi)
Missouri River, St Charles, MO (59 mi)
Mississippi River, Canton, MO (59.7 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (60.4 mi)
Mississippi River, Keokuk, IA (66.4 mi)
Missouri River, Labadle, MO (74.8 mi)
Missouri River, Hermann, MO (77.8 mi)
Illinois River, Peoria, IL (86.4 mi)

Weather for Florence, Illinois

Current Weather

68.9°F
Clear
Clear
70°F
68.9°F
84%
S 6.7 mph
14.1 mph
68.9°F
63.9°F
0 in
0%
6 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 94°F
L: 68°F
Sunny
Thu
H: 85°F
L: 69°F
Thundery outbreaks in nearby
Fri
H: 87°F
L: 69°F
Sunny
Sat
H: 94°F
L: 69°F
Sunny
Sun
H: 102°F
L: 77°F

Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 4.8 μg/m3
Carbon Monoxide: 168 μg/m3
Nitrogen Dioxide: 9.9 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:08 PM
Sunset: 8:11 PM
Daylight: 14 hrs 5 mins
Moonrise: 12:01 AM
Moon Transit: 6:10 AM
Moonset: 1:31 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
6:01 PM - 8:31 PM

Minor Periods

1:01 PM - 2:31 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Flood Watch issued August 5 at 1:57AM CDT until August 6 at 10:00AM CDT by NWS St Louis MO

Effective: Wed August 5, 2026, 1:57 AM
Expires: Wed August 5, 2026, 5:00 PM

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Adams IL, Brown IL, Calhoun IL and Pike IL and Missouri, including the following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO, Gasconade MO, Jefferson MO, Knox MO, Lewis MO, Lincoln MO, Marion MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, Shelby MO, Warren MO and Washington MO. * WHEN...From this evening through Thursday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Training thunderstorms with high rainfall rates are expected within the watch area late this evening into Thursday morning.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Wednesday, August 5, 2026

Weather Forecast

Sunny
94.1°F
68.4°F
78.4°F
69%
0.05 in
57%
0%
9.4 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 6.82 μg/m3
PM10: 7.13 μg/m3
Carbon Monoxide: 157.75 μg/m3
Nitrogen Dioxide: 6.18 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 72.79 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:08 PM
Sunset: 8:11 PM
Daylight: 14 hrs 5 mins
Moonrise: 12:01 AM
Moon Transit: 6:10 AM
Moonset: 1:31 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
6:01 PM - 8:31 PM

Minor Periods

1:01 PM - 2:31 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
84.5°F
69°F
75.4°F
84%
0.84 in
81%
0%
13.2 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 4.95 μg/m3
PM10: 5.47 μg/m3
Carbon Monoxide: 147.17 μg/m3
Nitrogen Dioxide: 7.7 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 67.71 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:08 PM
Sunset: 8:10 PM
Daylight: 14 hrs 3 mins
Moonrise: 12:33 AM
Moon Transit: 7:03 AM
Moonset: 2:46 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
6:57 PM - 9:27 PM

Minor Periods

2:16 PM - 3:46 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, August 7, 2026

Weather Forecast

Thundery outbreaks in nearby
86.6°F
69.2°F
77°F
81%
0.24 in
75%
0%
10.3 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 8.82 μg/m3
PM10: 10.13 μg/m3
Carbon Monoxide: 136.71 μg/m3
Nitrogen Dioxide: 5.96 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 68.42 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:08 PM
Sunset: 8:09 PM
Daylight: 14 hrs 1 mins
Moonrise: 12:13 AM
Moon Transit: 8:02 AM
Moonset: 4:01 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:32 AM - 10:02 AM
7:58 PM - 10:28 PM

Minor Periods

3:31 PM - 5:01 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, August 8, 2026

Weather Forecast

Sunny
93.5°F
68.9°F
79.7°F
73%
0 in
7%
0%
11.2 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 6.29 μg/m3
Carbon Monoxide: 149.23 μg/m3
Nitrogen Dioxide: 4.99 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 70.04 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:08 PM
Sunset: 8:07 PM
Daylight: 13 hrs 59 mins
Moonrise: 1:03 AM
Moon Transit: 9:05 AM
Moonset: 5:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.6%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
9:02 PM - 11:32 PM

Minor Periods

4:40 PM - 6:10 PM
12:33 AM - 2:03 AM

Action Rating: 2 out of 5

Sunday, August 9, 2026

Weather Forecast

Sunny
101.5°F
76.6°F
86.8°F
52%
0 in
2%
0%
19 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 4.41 μg/m3
Carbon Monoxide: 220.63 μg/m3
Nitrogen Dioxide: 8.51 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 63.75 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:07 PM
Sunset: 8:06 PM
Daylight: 13 hrs 57 mins
Moonrise: 2:06 AM
Moon Transit: 10:10 AM
Moonset: 6:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:40 AM - 12:10 AM

Minor Periods

5:41 PM - 7:11 PM
1:36 AM - 3:06 AM

Action Rating: 2 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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