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

Current Water Temperature

32.0°F

Measurement Time: Monday, June 29, 2026, 10:48 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

93.7°F
Sunny
Sunny
103.1°F
117.3°F
60%
SSW 12.8 mph
14.7 mph
99.5°F
77.4°F
0 in
0%
9 mi
1013 mbar
6.6

Five Day Weather Forecast

Sunny
Mon
H: 100°F
L: 75°F
Sunny
Tue
H: 94°F
L: 76°F
Sunny
Wed
H: 96°F
L: 76°F
Sunny
Thu
H: 96°F
L: 79°F
Sunny
Fri
H: 94°F
L: 77°F

Air Quality

PM2.5: 7.1 μg/m3
PM10: 8.8 μg/m3
Carbon Monoxide: 116 μg/m3
Nitrogen Dioxide: 2.1 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 10 mins
Moonrise: 8:49 PM
Moon Transit: 12:16 AM
Moonset: 4:33 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:31 AM - 3:01 PM

Minor Periods

8:19 PM - 9:49 PM
4:03 AM - 5:33 AM

Action Rating: 5 out of 5

Extreme Heat Warning issued June 29 at 2:02AM CDT until July 1 at 10:00PM CDT by NWS Chicago IL

Effective: Mon June 29, 2026, 2:02 AM
Expires: Mon June 29, 2026, 12:15 PM

* WHAT...Dangerously hot conditions with heat index values around 105 expected each afternoon. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From noon today to 10 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

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.


Extreme Heat Warning issued June 29 at 10:09AM CDT until July 1 at 10:00PM CDT by NWS Chicago IL

Effective: Mon June 29, 2026, 10:09 AM
Expires: Mon June 29, 2026, 8:15 PM

* WHAT...Dangerously hot conditions with heat index values around 105 expected each afternoon. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

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.
Monday, June 29, 2026

Weather Forecast

Sunny
99.5°F
74.7°F
85.4°F
70%
0 in
6%
0%
13.4 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 7.49 μg/m3
PM10: 8.65 μg/m3
Carbon Monoxide: 131.71 μg/m3
Nitrogen Dioxide: 6.39 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 83.67 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 10 mins
Moonrise: 8:49 PM
Moon Transit: 12:16 AM
Moonset: 4:33 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:31 AM - 3:01 PM

Minor Periods

8:19 PM - 9:49 PM
4:03 AM - 5:33 AM

Action Rating: 5 out of 5

Tuesday, June 30, 2026

Weather Forecast

Sunny
94.2°F
76.4°F
85.2°F
67%
0 in
4%
0%
15.7 mph
9.9


Air Quality

AQI: 2 - Moderate
PM2.5: 15.73 μg/m3
PM10: 24.08 μg/m3
Carbon Monoxide: 130.58 μg/m3
Nitrogen Dioxide: 4.94 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 91.83 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:27 PM
Moon Transit: 1:08 AM
Moonset: 5:31 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 AM
1:22 PM - 3:52 PM

Minor Periods

8:57 PM - 10:27 PM
5:01 AM - 6:31 AM

Action Rating: 5 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
96.1°F
76.2°F
86.1°F
66%
0 in
4%
0%
13.2 mph
10.2


Air Quality

AQI: 2 - Moderate
PM2.5: 16.55 μg/m3
PM10: 24.64 μg/m3
Carbon Monoxide: 147.37 μg/m3
Nitrogen Dioxide: 5.19 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 95.5 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 9 mins
Moonrise: 10:00 PM
Moon Transit: 1:57 AM
Moonset: 6:34 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
2:11 PM - 4:41 PM

Minor Periods

9:30 PM - 11:00 PM
6:04 AM - 7:34 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
96.2°F
78.6°F
86.6°F
64%
0 in
7%
0%
11 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 7.62 μg/m3
PM10: 9.18 μg/m3
Carbon Monoxide: 198.8 μg/m3
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 2.14 μg/m3
Ozone: 91.4 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 9 mins
Moonrise: 10:27 PM
Moon Transit: 2:45 AM
Moonset: 7:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
2:57 PM - 5:27 PM

Minor Periods

9:57 PM - 11:27 PM
7:08 AM - 8:38 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
94°F
77°F
84.6°F
69%
0.01 in
17%
0%
10.7 mph
9.8


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:55 AM
Sunset: 8:29 PM
Daylight: 15 hrs 8 mins
Moonrise: 10:50 PM
Moon Transit: 3:30 AM
Moonset: 8:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:00 AM - 5:30 AM
3:42 PM - 6:12 PM

Minor Periods

10:20 PM - 11:50 PM
8:14 AM - 9:44 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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