Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

53.2°F

Measurement Time: Tuesday, April 15, 2025, 5:45 AM CDT

Temperature Locations

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Illinois River

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

Elevation Above Sea Level: 499 feet

Nearest Address:
511 N 2553rd Rd
Seneca, IL 61341
La Salle County

GPS Coordinates: 41.2997222, -88.6141667

Nearby Water Temperatures

Illinois River, Seneca, IL (0 mi)
Illinois River, Marseilles, IL (5.5 mi)
Hanson Gravel Pit, Morris, IL (8 mi)
Kankakee River, Morris, IL (19.3 mi)
Illinois River, Utica, IL (19.4 mi)
Des Plaines River, Channahon, IL (22.2 mi)
Kankakee River, Wilmington, IL (22.4 mi)
Kankakee River, Custer Park, IL (25.5 mi)
Des Plaines River, Rockdale, IL (29.7 mi)
Des Plaines River, Joliet, IL (32 mi)
Des Plaines River, Lockport, IL (33.4 mi)
Chicago Sanitary and Ship Canal, Romeoville, IL (37.1 mi)
Illinois River, Henry, IL (40.8 mi)
Cal-Sag Channel, Blue Island, IL (54.6 mi)
Plum Creek, Dyer, IN (59 mi)

Weather for Seneca, Illinois

Current Weather

47.7°F
Sunny
Sunny
43.6°F
45.8°F
57%
ESE 8.7 mph
10.3 mph
41.9°F
37.6°F
0 in
0%
9 mi
1030 mbar
1.7

Five Day Weather Forecast

Sunny
Sat
H: 68°F
L: 38°F
Patchy rain nearby
Sun
H: 77°F
L: 54°F
Heavy rain
Mon
H: 73°F
L: 60°F
Patchy rain nearby
Tue
H: 83°F
L: 66°F
Moderate rain
Wed
H: 73°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 6.15 μg/m3
PM10: 6.65 μg/m3
Carbon Monoxide: 164.85 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 3.25 μg/m3
Ozone: 106 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:55 AM
Sunset: 7:30 PM
Daylight: 13 hrs 9 mins
Moonrise: 3:30 AM
Moon Transit: 8:15 AM
Moonset: 1:08 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
8:20 PM - 10:50 PM

Minor Periods

12:38 AM - 2:08 PM
3:00 AM - 4:30 AM

Action Rating: 2 out of 5

Flood Warning issued April 10 at 9:04PM CDT by NWS Chicago IL

Effective: Fri April 10, 2026, 9:04 PM
Expires: Sat April 11, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Lake IL and Kane Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until further notice. * IMPACTS...At 10.0 feet, Winaki Trail and Onaway Trail are threatened south of Algonquin. Athletic fields inundated at Judson College in Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 9.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Friday was 10.0 feet. - Forecast...The river is expected to gradually fall below flood stage early next week. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Saturday afternoon.
Saturday, April 11, 2026

Weather Forecast

Sunny
68.2°F
37.8°F
51.9°F
61%
0 in
0%
0%
11.6 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 9.26 μg/m3
PM10: 9.76 μg/m3
Carbon Monoxide: 193.69 μg/m3
Nitrogen Dioxide: 7.26 μg/m3
Sulphur Dioxide: 3.57 μg/m3
Ozone: 78.56 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:55 AM
Sunset: 7:30 PM
Daylight: 13 hrs 9 mins
Moonrise: 3:30 AM
Moon Transit: 8:15 AM
Moonset: 1:08 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
8:20 PM - 10:50 PM

Minor Periods

12:38 AM - 2:08 PM
3:00 AM - 4:30 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Patchy rain nearby
76.6°F
53.8°F
64.1°F
77%
0.17 in
86%
0%
21.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 7.71 μg/m3
Carbon Monoxide: 172.61 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 3.77 μg/m3
Ozone: 93.48 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:55 AM
Sunset: 7:31 PM
Daylight: 13 hrs 12 mins
Moonrise: 3:58 AM
Moon Transit: 9:02 AM
Moonset: 2:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
9:06 PM - 11:36 PM

Minor Periods

1:46 PM - 3:16 PM
3:28 AM - 4:58 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Heavy rain
72.6°F
60.1°F
67°F
86%
1.42 in
85%
0%
20.8 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 4.81 μg/m3
PM10: 5.11 μg/m3
Carbon Monoxide: 150.25 μg/m3
Nitrogen Dioxide: 3.63 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 85.8 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 12:54 AM
Sunset: 7:32 PM
Daylight: 13 hrs 14 mins
Moonrise: 4:23 AM
Moon Transit: 9:48 AM
Moonset: 3:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:18 AM - 11:48 AM

Minor Periods

2:54 PM - 4:24 PM
3:53 AM - 5:23 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Patchy rain nearby
82.9°F
66.2°F
72.8°F
78%
0.12 in
77%
0%
23 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 4.78 μg/m3
Carbon Monoxide: 152.08 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 79.68 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:54 AM
Sunset: 7:34 PM
Daylight: 13 hrs 17 mins
Moonrise: 4:45 AM
Moon Transit: 10:34 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:04 AM - 12:34 AM

Minor Periods

4:05 PM - 5:35 PM
4:15 AM - 5:45 AM

Action Rating: 2 out of 5

Wednesday, April 15, 2026

Weather Forecast

Moderate rain
73.4°F
61.8°F
66.9°F
84%
0.73 in
87%
0%
18.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.63 μg/m3
PM10: 5.93 μg/m3
Carbon Monoxide: 155.63 μg/m3
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 78.77 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:54 AM
Sunset: 7:35 PM
Daylight: 13 hrs 20 mins
Moonrise: 5:07 AM
Moon Transit: 10:33 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
10:03 AM - 12:33 AM

Minor Periods

5:17 PM - 6:47 PM
4:37 AM - 6:07 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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