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

Current Water Temperature

32.0°F

Measurement Time: Tuesday, April 21, 2026, 11:25 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

73.6°F
Light rain
Light rain
75.9°F
79°F
43%
WSW 13.2 mph
16.7 mph
78.8°F
53.2°F
0 in
100%
9 mi
1010 mbar
1.7

Five Day Weather Forecast

Sunny
Tue
H: 79°F
L: 45°F
Cloudy
Wed
H: 69°F
L: 55°F
Patchy rain nearby
Thu
H: 78°F
L: 59°F
Moderate rain
Fri
H: 74°F
L: 62°F
Sunny
Sat
H: 69°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 11.05 μg/m3
PM10: 14.45 μg/m3
Carbon Monoxide: 209.85 μg/m3
Nitrogen Dioxide: 24.15 μg/m3
Sulphur Dioxide: 3.85 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:49 AM
Sunset: 7:38 PM
Daylight: 13 hrs 37 mins
Moonrise: 8:50 AM
Moon Transit: 5:04 PM
Moonset: 12:14 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
4:34 PM - 7:04 PM

Minor Periods

8:20 AM - 9:50 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Flood Warning issued April 20 at 9:08PM CDT by NWS Chicago IL

Effective: Mon April 20, 2026, 9:08 PM
Expires: Tue April 21, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and forecasted to continue. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, Structures threatened along IL-22 (Half-Day Road) just east of the river. Multiple structures threatened near and west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield Road threatened near the river. Multiple trails inundated in Half-Day Forest Preserve. * ADDITIONAL DETAILS... - At 8:45 PM CDT Monday the stage was 15.1 feet. - Forecast...The river has crested, and now will gradually fall through the week. - Flood stage is 12.5 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 Tuesday afternoon.


Flood Warning issued April 20 at 9:08PM CDT by NWS Chicago IL

Effective: Mon April 20, 2026, 9:08 PM
Expires: Tue April 21, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and forecasted to continue. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...Until further notice. * IMPACTS...At 18.5 feet, Big Bend Road threatened in Des Plaines. * ADDITIONAL DETAILS... - At 8:45 PM CDT Monday the stage was 18.0 feet. - Forecast...The river is currently cresting. It will begin a slow fall starting tomorrow. - Flood stage is 15.0 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 Tuesday afternoon.


Flood Warning issued April 21 at 11:41AM CDT by NWS Chicago IL

Effective: Tue April 21, 2026, 11:41 AM
Expires: Wed April 22, 2026, 5:45 AM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. For the Des Plaines River...including Des Plaines, Russell, Lincolnshire, Gurnee...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, Structures threatened along IL-22 (Half-Day Road) just east of the river. Multiple structures threatened near and west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield Road threatened near the river. Multiple trails inundated in Half-Day Forest Preserve. * ADDITIONAL DETAILS... - At 10:45 AM CDT Tuesday the stage was 15.0 feet. - Recent Activity...The river stage crested yesterday and continues a slow fall. - Forecast...The river is expected to continue to gradually fall and may fall below moderate flood stage tomorrow night. - Flood stage is 12.5 feet. - http://www.weather.gov/safety/flood

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. 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. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.


Flood Warning issued April 21 at 11:41AM CDT by NWS Chicago IL

Effective: Tue April 21, 2026, 11:41 AM
Expires: Wed April 22, 2026, 5:45 AM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. For the Des Plaines River...including Des Plaines, Russell, Lincolnshire, Gurnee...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...Until further notice. * IMPACTS...At 18.5 feet, Big Bend Road threatened in Des Plaines. * ADDITIONAL DETAILS... - At 10:45 AM CDT Tuesday the stage was 17.9 feet. - Recent Activity...The river stage crested overnight and has begun a slow fall. - Forecast...The river is expected to continue to gradually fall over the next few days. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood

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. 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. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.


Flood Warning issued April 20 at 9:04PM CDT by NWS Chicago IL

Effective: Mon April 20, 2026, 9:04 PM
Expires: Tue April 21, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. * WHAT...Minor flooding is occurring and forecasted to continue. * WHERE...Fox River from Red Gate Road in St. Charles downstream to Millington, including the Montgomery gauge. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Low-lying parking lots at city hall and Boy Scout Island are threatened in St. Charles. Fox River Trail is threatened at St. Mary Park in St. Charles. * ADDITIONAL DETAILS... - At 8:00 PM CDT Monday the stage was 13.6 feet. - Forecast...The river is expected to remain nearly steady until further notice. - Flood stage is 13.5 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. 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 Tuesday afternoon.


Tuesday, April 21, 2026

Weather Forecast

Sunny
79.3°F
44.6°F
62.2°F
56%
0 in
0%
0%
15.7 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 7.67 μg/m3
PM10: 8.09 μg/m3
Carbon Monoxide: 184.49 μg/m3
Nitrogen Dioxide: 8.37 μg/m3
Sulphur Dioxide: 5.23 μg/m3
Ozone: 96.08 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:49 AM
Sunset: 7:38 PM
Daylight: 13 hrs 37 mins
Moonrise: 8:50 AM
Moon Transit: 5:04 PM
Moonset: 12:14 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
4:34 PM - 7:04 PM

Minor Periods

8:20 AM - 9:50 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, April 22, 2026

Weather Forecast

Cloudy
69.2°F
54.7°F
62.2°F
79%
0 in
0%
0%
6 mph
4.1


Air Quality

AQI: 1 - Good
PM2.5: 8.51 μg/m3
PM10: 9.59 μg/m3
Carbon Monoxide: 229.45 μg/m3
Nitrogen Dioxide: 13.68 μg/m3
Sulphur Dioxide: 3.64 μg/m3
Ozone: 79.96 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:49 AM
Sunset: 7:39 PM
Daylight: 13 hrs 39 mins
Moonrise: 10:01 AM
Moon Transit: 6:06 PM
Moonset: 1:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
5:36 PM - 8:06 PM

Minor Periods

9:31 AM - 11:01 AM
12:45 AM - 2:15 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Patchy rain nearby
77.6°F
58.7°F
68.6°F
64%
0.01 in
88%
0%
13.9 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 10.68 μg/m3
PM10: 11.59 μg/m3
Carbon Monoxide: 236.37 μg/m3
Nitrogen Dioxide: 16.57 μg/m3
Sulphur Dioxide: 4.42 μg/m3
Ozone: 76.88 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 12:48 AM
Sunset: 7:40 PM
Daylight: 13 hrs 42 mins
Moonrise: 11:15 AM
Moon Transit: 7:04 PM
Moonset: 2:03 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

6:25 AM - 8:55 AM
6:34 PM - 9:04 PM

Minor Periods

10:45 AM - 12:15 AM
1:33 AM - 3:03 AM

Action Rating: 3 out of 5

Friday, April 24, 2026

Weather Forecast

Moderate rain
74.3°F
62.3°F
66.9°F
68%
0.2 in
89%
0%
12.8 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 6.03 μg/m3
PM10: 6.51 μg/m3
Carbon Monoxide: 166.7 μg/m3
Nitrogen Dioxide: 8.59 μg/m3
Sulphur Dioxide: 4.77 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 12:48 AM
Sunset: 7:41 PM
Daylight: 13 hrs 44 mins
Moonrise: 12:31 AM
Moon Transit: 7:57 PM
Moonset: 2:41 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

7:20 AM - 9:50 AM
7:27 PM - 9:57 PM

Minor Periods

12:01 AM - 1:31 PM
2:11 AM - 3:41 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Sunny
68.8°F
54°F
61°F
42%
0 in
0%
0%
10.5 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 3.92 μg/m3
PM10: 4.05 μg/m3
Carbon Monoxide: 190.71 μg/m3
Nitrogen Dioxide: 12.74 μg/m3
Sulphur Dioxide: 3.43 μg/m3
Ozone: 61.69 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 12:48 AM
Sunset: 7:42 PM
Daylight: 13 hrs 47 mins
Moonrise: 1:43 PM
Moon Transit: 8:44 PM
Moonset: 3:10 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
8:14 PM - 10:44 PM

Minor Periods

1:13 PM - 2:43 PM
2:40 AM - 4:10 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.

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