Water Temperature of the Cal-Sag Channel in Blue Island, IL

Current Water Temperature

32.0°F

Measurement Time: Monday, August 3, 2026, 9:40 AM CDT

Temperature Locations

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Local Points of Interest

Calumet-Saganashkee Channel; Little Calumet River

Cal-Sag Channel

Station Name: CALUMET SAG CHANNEL AT BLUE ISLAND, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 597 feet

Nearest Address:
13198 Division St
Blue Island, IL 60406
Cook County

GPS Coordinates: 41.65281186, -87.670326

Nearby Water Temperatures

Grand Calumet River, Chicago, IL (5.6 mi)
Grand Calumet River, Hammond, IN (9.1 mi)
Indiana Harbor Canal, East Chicago, IN (10.4 mi)
Hart Ditch, Munster, IN (11.7 mi)
Chicago River, Chicago, IL (12.8 mi)
Plum Creek, Dyer, IN (13 mi)
Little Calumet River, Gary, IN (15.1 mi)
Lake Michigan, Chicago, IL (17.4 mi)
Chicago Sanitary and Ship Canal, Romeoville, IL (20.1 mi)
Deep River, Lake Station, IN (20.3 mi)
Des Plaines River, Lockport, IL (21.8 mi)
Des Plaines River, Joliet, IL (22.8 mi)
Des Plaines River, Rockdale, IL (24.9 mi)
Des Plaines River, Channahon, IL (32.6 mi)
Lake Michigan, Wilmette, IL (33.3 mi)

Weather for Blue Island, Illinois

Current Weather

83.8°F
Sunny
Sunny
89.2°F
89.6°F
67%
ESE 3.8 mph
4.4 mph
83.8°F
71.9°F
0 in
3%
6 mi
1014 mbar
8.1

Five Day Weather Forecast

Sunny
Mon
H: 84°F
L: 64°F
Sunny
Tue
H: 85°F
L: 65°F
Partly Cloudy
Wed
H: 85°F
L: 67°F
Light rain shower
Thu
H: 81°F
L: 68°F
Fog
Fri
H: 88°F
L: 68°F

Air Quality

AQI: 2 - Moderate
PM2.5: 10.3 μg/m3
PM10: 10.5 μg/m3
Carbon Monoxide: 126 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 3.6 μg/m3
Ozone: 118 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:56 AM
Sunset: 8:06 PM
Daylight: 14 hrs 19 mins
Moonrise: 10:20 PM
Moon Transit: 12:00 AM
Moonset: 11:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:34 PM - 7:04 PM

Minor Periods

9:50 PM - 11:20 PM
10:31 AM - 12:01 AM

Action Rating: 2 out of 5

Flood Warning issued August 2 at 8:30PM CDT until August 3 at 4:00PM CDT by NWS Chicago IL

Effective: Sun August 2, 2026, 8:30 PM
Expires: Mon August 3, 2026, 2:30 PM

...The Flood Warning continues for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Thorn Creek from near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until Monday afternoon. * IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood. * ADDITIONAL DETAILS... - At 8:15 PM CDT Sunday, the stage was 11.2 feet. - Forecast...The river has crested and is expected to fall below flood stage early tomorrow afternoon. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Monday afternoon.
Monday, August 3, 2026

Weather Forecast

Sunny
84.2°F
63.5°F
70.9°F
86%
0 in
14%
0%
6.7 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 10.54 μg/m3
Carbon Monoxide: 148.92 μg/m3
Nitrogen Dioxide: 10.6 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 78.25 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:56 AM
Sunset: 8:06 PM
Daylight: 14 hrs 19 mins
Moonrise: 10:20 PM
Moon Transit: 12:00 AM
Moonset: 11:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:34 PM - 7:04 PM

Minor Periods

9:50 PM - 11:20 PM
10:31 AM - 12:01 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
84.8°F
64.7°F
75°F
68%
0 in
8%
0%
8.3 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 7.86 μg/m3
PM10: 7.96 μg/m3
Carbon Monoxide: 181.29 μg/m3
Nitrogen Dioxide: 15.95 μg/m3
Sulphur Dioxide: 3.55 μg/m3
Ozone: 65.42 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:56 AM
Sunset: 8:05 PM
Daylight: 14 hrs 17 mins
Moonrise: 10:45 PM
Moon Transit: 5:08 AM
Moonset: 12:11 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
5:22 PM - 7:52 PM

Minor Periods

10:15 PM - 11:45 PM
11:41 AM - 1:11 PM

Action Rating: 3 out of 5

Wednesday, August 5, 2026

Weather Forecast

Partly Cloudy
85.1°F
67.4°F
74.6°F
78%
1.32 in
78%
0%
9.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 8.76 μg/m3
PM10: 8.89 μg/m3
Carbon Monoxide: 180.67 μg/m3
Nitrogen Dioxide: 12.91 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 81.04 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:56 AM
Sunset: 8:04 PM
Daylight: 14 hrs 15 mins
Moonrise: 11:15 PM
Moon Transit: 5:57 AM
Moonset: 1:24 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
6:13 PM - 8:43 PM

Minor Periods

12:00 AM - 12:00 AM
12:54 AM - 2:24 PM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Light rain shower
81.1°F
67.8°F
72.7°F
90%
0.25 in
86%
0%
9.4 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 8.64 μg/m3
PM10: 8.68 μg/m3
Carbon Monoxide: 170.13 μg/m3
Nitrogen Dioxide: 13.5 μg/m3
Sulphur Dioxide: 2.76 μg/m3
Ozone: 87.33 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 12:56 AM
Sunset: 8:02 PM
Daylight: 14 hrs 12 mins
Moonrise: 12:15 AM
Moon Transit: 6:51 AM
Moonset: 2:41 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
7:09 PM - 9:39 PM

Minor Periods

2:11 PM - 3:41 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Fog
87.5°F
68°F
77.4°F
81%
0.11 in
71%
0%
6.5 mph
8


Air Quality

AQI: 2 - Moderate
PM2.5: 26.15 μg/m3
PM10: 26.2 μg/m3
Carbon Monoxide: 337.13 μg/m3
Nitrogen Dioxide: 52.18 μg/m3
Sulphur Dioxide: 3.54 μg/m3
Ozone: 31.38 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 12:56 AM
Sunset: 8:01 PM
Daylight: 14 hrs 10 mins
Moonrise: 12:53 AM
Moon Transit: 7:50 AM
Moonset: 3:56 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:20 AM - 9:50 AM
8:10 PM - 10:40 PM

Minor Periods

3:26 PM - 4:56 PM
12:00 AM - 12:00 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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