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

83.3°F
Sunny
Sunny
79.6°F
85.5°F
30%
SE 7.2 mph
9 mph
89.4°F
41°F
0 in
0%
9 mi
1015 mbar
2.5

Five Day Weather Forecast

Sunny
Tue
H: 91°F
L: 60°F
Sunny
Wed
H: 85°F
L: 62°F
Sunny
Thu
H: 76°F
L: 56°F
Sunny
Fri
H: 79°F
L: 53°F
Sunny
Sat
H: 75°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 10.15 μg/m3
PM10: 11.25 μg/m3
Carbon Monoxide: 198.85 μg/m3
Nitrogen Dioxide: 19.75 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 55 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:17 PM
Daylight: 14 hrs 50 mins
Moonrise: 4:03 PM
Moon Transit: 9:39 PM
Moonset: 2:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

8:59 AM - 11:29 AM
9:09 PM - 11:39 PM

Minor Periods

3:33 PM - 5:03 PM
2:15 AM - 3:45 AM

Action Rating: 2 out of 5

Air Quality Alert issued May 26 at 11:16AM CDT by NWS Chicago IL

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue May 26, 2026, 11:16 AM
Expires: Thu May 28, 2026, 12:00 AM

The Illinois Environmental Protection Agency has determined that an Air Pollution Action Day will be declared for the greater Chicago Metropolitan Area through Wednesday Night. A Chicago area Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are expected to be at or above the Unhealthy for Sensitive Groups category of the Air Quality Index for multiple days. Ozone is expected to be the primary pollutant of concern. Active children and adults, especially people with pulmonary or respiratory disease such as asthma, should limit prolonged outdoor activity. Area residents are urged to reduce pollution levels. Air quality forecasts, current air quality, and tips on how you can reduce your emissions can be found at www.airnow.gov. Media contact...Illinois EPA.


Tuesday, May 26, 2026

Weather Forecast

Sunny
90.7°F
59.5°F
76.5°F
34%
0 in
0%
0%
7.4 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 8.02 μg/m3
PM10: 8.95 μg/m3
Carbon Monoxide: 161.81 μg/m3
Nitrogen Dioxide: 9.64 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 72.92 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:17 PM
Daylight: 14 hrs 50 mins
Moonrise: 4:03 PM
Moon Transit: 9:39 PM
Moonset: 2:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

8:59 AM - 11:29 AM
9:09 PM - 11:39 PM

Minor Periods

3:33 PM - 5:03 PM
2:15 AM - 3:45 AM

Action Rating: 2 out of 5

Wednesday, May 27, 2026

Weather Forecast

Sunny
84.6°F
61.5°F
73.1°F
54%
0 in
0%
0%
8.1 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 11.62 μg/m3
PM10: 12.83 μg/m3
Carbon Monoxide: 201.01 μg/m3
Nitrogen Dioxide: 14.86 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 77.76 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:51 AM
Sunset: 8:18 PM
Daylight: 14 hrs 52 mins
Moonrise: 5:07 PM
Moon Transit: 10:22 PM
Moonset: 3:06 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

9:41 AM - 12:11 AM
12:00 AM - 12:00 AM

Minor Periods

4:37 PM - 6:07 PM
2:36 AM - 4:06 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Sunny
76.3°F
55.5°F
65°F
60%
0 in
0%
0%
12.3 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 8.59 μg/m3
PM10: 9.39 μg/m3
Carbon Monoxide: 136.17 μg/m3
Nitrogen Dioxide: 8.18 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 84.24 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:51 AM
Sunset: 8:19 PM
Daylight: 14 hrs 53 mins
Moonrise: 6:11 PM
Moon Transit: 11:06 PM
Moonset: 3:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

10:25 AM - 12:55 AM
12:00 AM - 12:00 AM

Minor Periods

5:41 PM - 7:11 PM
2:58 AM - 4:28 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Sunny
79.1°F
52.5°F
65.6°F
64%
0 in
0%
0%
9.2 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 8.11 μg/m3
PM10: 8.69 μg/m3
Carbon Monoxide: 144.39 μg/m3
Nitrogen Dioxide: 11.66 μg/m3
Sulphur Dioxide: 3.43 μg/m3
Ozone: 75.68 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:51 AM
Sunset: 8:19 PM
Daylight: 14 hrs 55 mins
Moonrise: 7:15 PM
Moon Transit: 11:53 PM
Moonset: 3:55 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
12:00 AM - 12:00 AM

Minor Periods

6:45 PM - 8:15 PM
3:25 AM - 4:55 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Sunny
74.8°F
52.8°F
64°F
58%
0 in
0%
0%
13.6 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 8.51 μg/m3
Carbon Monoxide: 177.12 μg/m3
Nitrogen Dioxide: 12.86 μg/m3
Sulphur Dioxide: 4.28 μg/m3
Ozone: 73.92 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:52 AM
Sunset: 8:20 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:18 PM
Moon Transit: 12:00 AM
Moonset: 4:27 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:59 AM - 2:29 PM

Minor Periods

7:48 PM - 9:18 PM
3:57 AM - 5:27 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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