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

View Nearby Locations     View All Illinois Locations     View Locations Near Me

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

78.1°F
Clear
Clear
83.4°F
82.5°F
97%
SW 8.1 mph
16.9 mph
77.5°F
73.7°F
0 in
0%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 99°F
L: 73°F
Sunny
Fri
H: 86°F
L: 68°F
Sunny
Sat
H: 90°F
L: 72°F
Mist
Sun
H: 88°F
L: 67°F
Partly Cloudy
Mon
H: 79°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 6.2 μg/m3
Carbon Monoxide: 134 μg/m3
Nitrogen Dioxide: 9.9 μg/m3
Sulphur Dioxide: 2.3 μg/m3
Ozone: 49 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:58 AM
Sunset: 8:32 PM
Daylight: 15 hrs 6 mins
Moonrise: 10:30 PM
Moon Transit: 2:49 AM
Moonset: 7:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:19 AM - 4:49 AM
2:53 PM - 5:23 PM

Minor Periods

10:00 PM - 11:30 PM
7:13 AM - 8:43 AM

Action Rating: 2 out of 5

Extreme Heat Warning issued July 1 at 3:09PM CDT until July 3 at 12:00AM CDT by NWS Chicago IL

Effective: Wed July 1, 2026, 3:09 PM
Expires: Thu July 2, 2026, 1:15 AM

* WHAT...Dangerously hot conditions with peak afternoon heat index values of 100 to 105 degrees expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until midnight CDT Thursday Night. * IMPACTS...Heat related illnesses increase during heat waves.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. The magnitude of anticipated heat, combined with oppressive warmth at night will lead to hazardous conditions, particularly for the elderly and those with pre-existing health conditions. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest cooling center. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Extreme Heat Warning issued July 2 at 3:03AM CDT until July 3 at 12:00AM CDT by NWS Chicago IL

Effective: Thu July 2, 2026, 3:03 AM
Expires: Thu July 2, 2026, 1:15 PM

* WHAT...Dangerously hot conditions with peak heat index values of 100 to 105 degrees. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until midnight CDT tonight. * IMPACTS...Heat related illnesses increase during heat waves.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. The magnitude of anticipated heat, combined with oppressive warmth at night will lead to hazardous conditions, particularly for the elderly and those with pre-existing health conditions. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest cooling center. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Thursday, July 2, 2026

Weather Forecast

Sunny
98.6°F
72.5°F
85.1°F
74%
0.03 in
36%
0%
13.9 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 6.45 μg/m3
PM10: 7.94 μg/m3
Carbon Monoxide: 123.67 μg/m3
Nitrogen Dioxide: 5.56 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 74.88 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:58 AM
Sunset: 8:32 PM
Daylight: 15 hrs 6 mins
Moonrise: 10:30 PM
Moon Transit: 2:49 AM
Moonset: 7:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:19 AM - 4:49 AM
2:53 PM - 5:23 PM

Minor Periods

10:00 PM - 11:30 PM
7:13 AM - 8:43 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
86.3°F
67.9°F
77.4°F
83%
0.22 in
74%
0%
9.6 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 4.74 μg/m3
PM10: 5.1 μg/m3
Carbon Monoxide: 135.54 μg/m3
Nitrogen Dioxide: 6.39 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 74.13 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:58 AM
Sunset: 8:31 PM
Daylight: 15 hrs 5 mins
Moonrise: 10:53 PM
Moon Transit: 3:34 AM
Moonset: 8:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
3:38 PM - 6:08 PM

Minor Periods

10:23 PM - 11:53 PM
8:19 AM - 9:49 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
89.8°F
72.2°F
80.4°F
84%
0.27 in
75%
0%
11.4 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.45 μg/m3
Carbon Monoxide: 140.08 μg/m3
Nitrogen Dioxide: 6.16 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 81.25 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:58 AM
Sunset: 8:31 PM
Daylight: 15 hrs 5 mins
Moonrise: 11:15 PM
Moon Transit: 4:18 AM
Moonset: 9:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
4:21 PM - 6:51 PM

Minor Periods

12:00 AM - 12:00 AM
9:23 AM - 10:53 AM

Action Rating: 2 out of 5

Sunday, July 5, 2026

Weather Forecast

Mist
87.6°F
67°F
78.1°F
86%
0.16 in
73%
0%
7.2 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 3.6 μg/m3
Carbon Monoxide: 142.23 μg/m3
Nitrogen Dioxide: 6.93 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 74.08 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:00 PM
Sunset: 8:31 PM
Daylight: 15 hrs 4 mins
Moonrise: 12:15 AM
Moon Transit: 5:01 AM
Moonset: 10:58 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
5:04 PM - 7:34 PM

Minor Periods

10:28 AM - 11:58 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 6, 2026

Weather Forecast

Partly Cloudy
78.8°F
58.5°F
70.5°F
88%
0.11 in
71%
0%
8.9 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 5.3 μg/m3
PM10: 5.41 μg/m3
Carbon Monoxide: 212.75 μg/m3
Nitrogen Dioxide: 16.9 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 43.25 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:00 PM
Sunset: 8:31 PM
Daylight: 15 hrs 3 mins
Moonrise: 12:35 AM
Moon Transit: 12:15 AM
Moonset: 12:05 AM
Moon Phase: Last Quarter
Moon Illumination: 48.6%

Best Times for Fishing or Hunting

Major Periods

11:45 AM - 2:15 PM
11:45 AM - 2:15 PM

Minor Periods

11:35 AM - 1:05 PM
12:00 AM - 12:00 AM

Action Rating: 2 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.

Webcams Near Seneca, IL

Sponsored Content