Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

37.4°F

Measurement Time: Friday, January 16, 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

34°F
Light rain
Light rain
24.3°F
35.2°F
89%
WSW 14.3 mph
20.8 mph
26°F
25.5°F
0 in
100%
2 mi
1003 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Fri
H: 37°F
L: 23°F
Overcast
Sat
H: 19°F
L: 15°F
Light freezing rain
Sun
H: 19°F
L: 10°F
Light snow
Mon
H: 15°F
L: 10°F
Overcast
Tue
H: 7°F
L: 2°F

Air Quality

PM2.5: 2.25 μg/m3
PM10: 2.35 μg/m3
Carbon Monoxide: 163.85 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:04 AM
Sunset: 4:52 PM
Daylight: 9 hrs 34 mins
Moonrise: 6:05 AM
Moon Transit: 10:20 AM
Moonset: 2:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:50 AM - 12:20 AM

Minor Periods

2:07 PM - 3:37 PM
5:35 AM - 7:05 AM

Action Rating: 3 out of 5

Friday, January 16, 2026

Weather Forecast

Moderate or heavy snow showers
37°F
23.4°F
30.4°F
78%
0.36 in
81%
18%
17.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.91 μg/m3
PM10: 4.45 μg/m3
Carbon Monoxide: 163.41 μg/m3
Nitrogen Dioxide: 5.47 μg/m3
Sulphur Dioxide: 2.74 μg/m3
Ozone: 61.6 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:04 AM
Sunset: 4:52 PM
Daylight: 9 hrs 34 mins
Moonrise: 6:05 AM
Moon Transit: 10:20 AM
Moonset: 2:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:50 AM - 12:20 AM

Minor Periods

2:07 PM - 3:37 PM
5:35 AM - 7:05 AM

Action Rating: 3 out of 5

Saturday, January 17, 2026

Weather Forecast

Overcast
18.7°F
14.7°F
18.7°F
64%
0 in
0%
7%
18.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.19 μg/m3
PM10: 2.29 μg/m3
Carbon Monoxide: 163.17 μg/m3
Nitrogen Dioxide: 3.26 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 63.04 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:04 AM
Sunset: 4:53 PM
Daylight: 9 hrs 36 mins
Moonrise: 6:52 AM
Moon Transit: 11:13 AM
Moonset: 3:38 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:43 AM - 1:13 PM

Minor Periods

3:08 PM - 4:38 PM
6:22 AM - 7:52 AM

Action Rating: 4 out of 5

Sunday, January 18, 2026

Weather Forecast

Light freezing rain
18.8°F
9.8°F
14.5°F
68%
0.01 in
74%
16%
13 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.19 μg/m3
Carbon Monoxide: 179.5 μg/m3
Nitrogen Dioxide: 4.81 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:04 AM
Sunset: 4:54 PM
Daylight: 9 hrs 38 mins
Moonrise: 7:30 AM
Moon Transit: 12:04 AM
Moonset: 4:44 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:34 AM - 2:04 PM

Minor Periods

4:14 PM - 5:44 PM
7:00 AM - 8:30 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Light snow
15.4°F
9.5°F
14.4°F
69%
0 in
0%
11%
17.2 mph
0


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: 7:16 AM
Sun Transit: 12:05 AM
Sunset: 4:55 PM
Daylight: 9 hrs 39 mins
Moonrise: 8:03 AM
Moon Transit: 12:53 AM
Moonset: 5:52 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
12:23 AM - 2:53 PM

Minor Periods

5:22 PM - 6:52 PM
7:33 AM - 9:03 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Overcast
7.1°F
2.1°F
6.2°F
55%
0 in
0%
17%
18.6 mph
1


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: 7:15 AM
Sun Transit: 12:05 AM
Sunset: 4:56 PM
Daylight: 9 hrs 41 mins
Moonrise: 8:30 AM
Moon Transit: 1:40 PM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 AM
1:10 PM - 3:40 PM

Minor Periods

6:31 PM - 8:01 PM
8:00 AM - 9:30 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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