Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

32.0°F

Measurement Time: Friday, January 23, 2026, 8:45 AM CST

Temperature Locations

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Illinois River

Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet

Nearest Address:
Harbor Lane
Seneca, IL 61360
La Salle County

GPS Coordinates: 41.2997, -88.6142

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 (37.2 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

61.2°F
Sunny
Sunny
61.2°F
62°F
38%
NW 8.3 mph
10 mph
61.7°F
44.5°F
0 in
0%
9 mi
1012 mbar
0.8

Five Day Weather Forecast

Sunny
Sun
H: 65°F
L: 31°F
Overcast
Mon
H: 53°F
L: 36°F
Mist
Tue
H: 44°F
L: 35°F
Partly Cloudy
Wed
H: 64°F
L: 48°F
Patchy rain nearby
Thu
H: 62°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 13.35 μg/m3
PM10: 13.45 μg/m3
Carbon Monoxide: 368.85 μg/m3
Nitrogen Dioxide: 30.15 μg/m3
Sulphur Dioxide: 3.75 μg/m3
Ozone: 22 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:08 AM
Sunset: 5:28 PM
Daylight: 10 hrs 39 mins
Moonrise: 6:03 AM
Moon Transit: 10:46 AM
Moonset: 3:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:16 AM - 12:46 AM

Minor Periods

3:07 PM - 4:37 PM
5:33 AM - 7:03 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Sunny
65.1°F
30.6°F
44.5°F
71%
0 in
0%
0%
9.2 mph
0.5


Air Quality

AQI: 2 - Moderate
PM2.5: 16.89 μg/m3
PM10: 17.23 μg/m3
Carbon Monoxide: 307.77 μg/m3
Nitrogen Dioxide: 24.16 μg/m3
Sulphur Dioxide: 3.33 μg/m3
Ozone: 22.04 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:08 AM
Sunset: 5:28 PM
Daylight: 10 hrs 39 mins
Moonrise: 6:03 AM
Moon Transit: 10:46 AM
Moonset: 3:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:16 AM - 12:46 AM

Minor Periods

3:07 PM - 4:37 PM
5:33 AM - 7:03 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Overcast
53.1°F
35.8°F
43.2°F
93%
0 in
0%
0%
19.5 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 9.94 μg/m3
PM10: 10.11 μg/m3
Carbon Monoxide: 248.13 μg/m3
Nitrogen Dioxide: 15.22 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 49.2 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 12:08 AM
Sunset: 5:30 PM
Daylight: 10 hrs 42 mins
Moonrise: 6:32 AM
Moon Transit: 11:34 AM
Moonset: 4:46 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:04 AM - 1:34 PM

Minor Periods

4:16 PM - 5:46 PM
6:02 AM - 7:32 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Mist
44.3°F
35.1°F
40.2°F
97%
0 in
0%
0%
19.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.85 μg/m3
PM10: 8.99 μg/m3
Carbon Monoxide: 216.57 μg/m3
Nitrogen Dioxide: 8.33 μg/m3
Sulphur Dioxide: 3.43 μg/m3
Ozone: 58.32 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:08 AM
Sunset: 5:31 PM
Daylight: 10 hrs 44 mins
Moonrise: 6:57 AM
Moon Transit: 12:21 AM
Moonset: 5:56 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:51 AM - 2:21 PM

Minor Periods

5:26 PM - 6:56 PM
6:27 AM - 7:57 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Partly Cloudy
63.5°F
47.7°F
53.1°F
64%
0 in
0%
0%
22.8 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.03 μg/m3
PM10: 5.13 μg/m3
Carbon Monoxide: 178.31 μg/m3
Nitrogen Dioxide: 4.33 μg/m3
Sulphur Dioxide: 2.54 μg/m3
Ozone: 80.96 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:08 AM
Sunset: 5:32 PM
Daylight: 10 hrs 47 mins
Moonrise: 7:20 AM
Moon Transit: 12:00 AM
Moonset: 7:06 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:25 AM - 2:55 AM

Minor Periods

6:36 PM - 8:06 PM
6:50 AM - 8:20 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Patchy rain nearby
61.8°F
39.3°F
49°F
52%
0.02 in
76%
0%
12.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.65 μg/m3
PM10: 2.9 μg/m3
Carbon Monoxide: 170.81 μg/m3
Nitrogen Dioxide: 4.37 μg/m3
Sulphur Dioxide: 1.93 μg/m3
Ozone: 73.62 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:08 AM
Sunset: 5:33 PM
Daylight: 10 hrs 49 mins
Moonrise: 7:41 AM
Moon Transit: 3:07 PM
Moonset: 8:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

1:11 AM - 3:41 AM
2:37 PM - 5:07 PM

Minor Periods

7:47 PM - 9:17 PM
7:11 AM - 8:41 AM

Action Rating: 4 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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