Water Temperature of the Illinois River in Florence, IL

Current Water Temperature

78.8°F

Measurement Time: Wednesday, August 5, 2026, 11:15 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

70.7°F
Patchy rain nearby
Patchy rain nearby
71.6°F
75.7°F
95%
SSE 11.2 mph
20.6 mph
70.7°F
69.1°F
0.06 in
74%
4 mi
1016 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 84°F
L: 70°F
Sunny
Fri
H: 90°F
L: 69°F
Sunny
Sat
H: 86°F
L: 68°F
Sunny
Sun
H: 97°F
L: 74°F
Sunny
Mon
H: 96°F
L: 73°F

Air Quality

AQI: 1 - Good
PM2.5: 4.2 μg/m3
PM10: 4.6 μg/m3
Carbon Monoxide: 121 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 64 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

Flood Watch issued August 5 at 1:31PM CDT until August 6 at 10:00AM CDT by NWS St Louis MO

Effective: Wed August 5, 2026, 1:31 PM
Expires: Thu August 6, 2026, 4:45 AM

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southwest Illinois, including the following areas, Greene IL, Jersey IL, Madison IL, Monroe IL and Saint Clair IL. * WHEN...From 10 PM CDT 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... - Thunderstorms with high rainfall rates are expected to develop and track repeatedly over similar locations late this evening into Thursday morning, which will likely lead to areas of flash flooding.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.


Flood Watch issued August 5 at 1:31PM CDT until August 6 at 10:00AM CDT by NWS St Louis MO

Effective: Wed August 5, 2026, 1:31 PM
Expires: Thu August 6, 2026, 4:45 AM

* WHAT...Flash flooding caused by excessive rainfall continues to be 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 10 PM CDT 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... - Thunderstorms with high rainfall rates are expected to develop and track repeatedly over similar locations late this evening into Thursday morning, which will likely lead to areas of flash flooding.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Thursday, August 6, 2026

Weather Forecast

Patchy rain nearby
84.4°F
69.8°F
75.6°F
82%
0.29 in
78%
0%
14.1 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 5.17 μg/m3
Carbon Monoxide: 136.38 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 72.25 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

Sunny
89.5°F
68.9°F
77°F
81%
0.15 in
69%
0%
13 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 8.4 μg/m3
PM10: 9.92 μg/m3
Carbon Monoxide: 141.42 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 73.58 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
86.1°F
67.5°F
75.7°F
84%
0.19 in
71%
0%
11.9 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 5.78 μg/m3
PM10: 6.38 μg/m3
Carbon Monoxide: 142.25 μg/m3
Nitrogen Dioxide: 5.71 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 69.04 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
96.9°F
73.5°F
82.6°F
68%
0.06 in
57%
0%
14.1 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 6.82 μg/m3
PM10: 7.44 μg/m3
Carbon Monoxide: 171.66 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 69.21 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

Monday, August 10, 2026

Weather Forecast

Sunny
96.4°F
73.2°F
84.1°F
61%
0 in
4%
0%
13 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 8.6 μg/m3
PM10: 9.11 μg/m3
Carbon Monoxide: 263.5 μg/m3
Nitrogen Dioxide: 5.76 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 45.63 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:07 PM
Sunset: 8:05 PM
Daylight: 13 hrs 55 mins
Moonrise: 3:18 AM
Moon Transit: 11:14 AM
Moonset: 7:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:44 AM - 1:14 PM

Minor Periods

6:30 PM - 8:00 PM
2:48 AM - 4:18 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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