Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

31.8°F

Measurement Time: Sunday, January 21, 2024, 8:45 AM CST

Temperature Locations

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Illinois River

Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet / 152 meters

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

GPS Coordinates: 41.2997, -88.6142

Nearby Water Temperatures

Illinois River, Seneca, IL (0.0 mi)
Illinois River, Marseilles, IL (5.5 mi)
Hanson Gravel Pit, Morris, IL (8.0 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 (32.0 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 (59.0 mi)

Weather for Seneca, Illinois

Current Weather

54.9°F
Cloudy
Conditions: Cloudy
Humidity: 74%
Feels Like: 53.5°F
Wind: NW 5.8 mph
Wind Gusts: 7.5 mph
Pressure: 29.88 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 1.5

Five Day Weather Forecast

Partly Cloudy
Thu
H: 73°F
L: 42°F
Overcast
Fri
H: 64°F
L: 48°F
Sunny
Sat
H: 68°F
L: 37°F
Sunny
Sun
H: 68°F
L: 41°F
Sunny
Mon
H: 75°F
L: 43°F

Air Quality

AQI: 1 - Good
PM2.5: 7.03 μg/m3
PM10: 7.03 μg/m3
Carbon Monoxide: 333 μg/m3
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 57 mins
Moonrise: 6:02 PM
Moon Transit: 10:47 PM
Moonset: 2:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
12:00 AM - 12:00 AM

Minor Periods

5:32 PM - 7:02 PM
2:00 AM - 3:30 AM

Action Rating: 3 out of 5

Beach Hazards Statement issued September 4 at 3:12AM CDT until September 4 at 3:00PM CDT by NWS Chicago IL

Effective: Thu September 4, 2025, 3:12 AM
Expires: Thu September 4, 2025, 11:15 AM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 7 ft expected. * WHERE...Lake IN and Porter Counties. * WHEN...Until 3 PM CDT this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.
Thursday, September 4, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 56.2°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 10.7 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 6.46 μg/m3
PM10: 6.56 μg/m3
Carbon Monoxide: 345.43 μg/m3
Nitrogen Dioxide: 13.44 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 58 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 57 mins
Moonrise: 6:02 PM
Moon Transit: 10:47 PM
Moonset: 2:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
12:00 AM - 12:00 AM

Minor Periods

5:32 PM - 7:02 PM
2:00 AM - 3:30 AM

Action Rating: 3 out of 5

Friday, September 5, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 57.5°F
Average Humidity: 72%
Chance of Rain: 0%
Wind: 19.5 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 6.87 μg/m3
PM10: 6.9 μg/m3
Carbon Monoxide: 372.37 μg/m3
Nitrogen Dioxide: 8.53 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 76.44 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:53 AM
Sunset: 7:20 PM
Daylight: 12 hrs 54 mins
Moonrise: 6:32 PM
Moon Transit: 11:38 PM
Moonset: 3:42 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

10:54 AM - 1:24 PM
12:00 AM - 12:00 AM

Minor Periods

6:02 PM - 7:32 PM
3:12 AM - 4:42 AM

Action Rating: 3 out of 5

Saturday, September 6, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54.4°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 15 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 3.67 μg/m3
PM10: 3.68 μg/m3
Carbon Monoxide: 348.84 μg/m3
Nitrogen Dioxide: 15.76 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 57.36 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:52 AM
Sunset: 7:18 PM
Daylight: 12 hrs 52 mins
Moonrise: 6:57 PM
Moon Transit: 12:00 AM
Moonset: 4:56 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:44 AM - 2:14 PM

Minor Periods

6:27 PM - 7:57 PM
4:26 AM - 5:56 AM

Action Rating: 3 out of 5

Sunday, September 7, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54.8°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 13 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 5.52 μg/m3
PM10: 5.56 μg/m3
Carbon Monoxide: 327.82 μg/m3
Nitrogen Dioxide: 20.96 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 53.32 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:52 AM
Sunset: 7:16 PM
Daylight: 12 hrs 49 mins
Moonrise: 7:20 PM
Moon Transit: 12:27 AM
Moonset: 6:10 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

6:50 PM - 8:20 PM
5:40 AM - 7:10 AM

Action Rating: 4 out of 5

Monday, September 8, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58°F
Average Humidity: 55%
Chance of Rain: 0%
Wind: 6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 12.31 μg/m3
PM10: 12.41 μg/m3
Carbon Monoxide: 497.79 μg/m3
Nitrogen Dioxide: 43.52 μg/m3
Sulphur Dioxide: 3.15 μg/m3
Ozone: 34.85 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:51 AM
Sunset: 7:15 PM
Daylight: 12 hrs 46 mins
Moonrise: 7:43 PM
Moon Transit: 2:28 PM
Moonset: 7:24 AM
Moon Phase: Full
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

1:58 PM - 4:28 PM
1:58 PM - 4:28 PM

Minor Periods

7:13 PM - 8:43 PM
6:54 AM - 8:24 AM

Action Rating: 5 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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