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

Current Water Temperature

32.0°F

Measurement Time: Thursday, July 2, 2026, 10:35 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°F
Partly cloudy
Partly cloudy
101.2°F
109.9°F
46%
SW 13.6 mph
15.7 mph
96.8°F
74.6°F
0 in
75%
9 mi
1017 mbar
7.4

Five Day Weather Forecast

Sunny
Thu
H: 100°F
L: 78°F
Sunny
Fri
H: 92°F
L: 72°F
Sunny
Sat
H: 93°F
L: 72°F
Partly Cloudy
Sun
H: 82°F
L: 68°F
Overcast
Mon
H: 73°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 8.4 μg/m3
PM10: 11 μg/m3
Carbon Monoxide: 112 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 110 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

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.


Extreme Heat Warning issued July 2 at 10:24AM CDT until July 3 at 12:00AM CDT by NWS Chicago IL

Effective: Thu July 2, 2026, 10:24 AM
Expires: Thu July 2, 2026, 8:30 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 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. 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 1:48PM CDT until July 3 at 12:00AM CDT by NWS Chicago IL

Effective: Thu July 2, 2026, 1:48 PM
Expires: Fri July 3, 2026, 12:00 AM

* WHAT...Dangerously hot conditions with 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 significantly during extreme heat and high humidity events.

Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. 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. Stay cool, stay hydrated, stay informed. 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
100.4°F
77.7°F
87.7°F
64%
0 in
4%
0%
13.6 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 8.45 μg/m3
PM10: 10.33 μg/m3
Carbon Monoxide: 125.08 μg/m3
Nitrogen Dioxide: 6.19 μg/m3
Sulphur Dioxide: 2.43 μg/m3
Ozone: 92.13 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
91.7°F
72.3°F
82.1°F
71%
0.34 in
69%
0%
12.1 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 7.68 μg/m3
PM10: 8.28 μg/m3
Carbon Monoxide: 140.58 μg/m3
Nitrogen Dioxide: 8.69 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 92.17 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

Saturday, July 4, 2026

Weather Forecast

Sunny
92.8°F
72.4°F
82.5°F
70%
0.09 in
57%
0%
11.2 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 7.17 μg/m3
PM10: 7.62 μg/m3
Carbon Monoxide: 144.79 μg/m3
Nitrogen Dioxide: 7.87 μg/m3
Sulphur Dioxide: 2.24 μg/m3
Ozone: 95.67 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:55 AM
Sunset: 8:29 PM
Daylight: 15 hrs 7 mins
Moonrise: 11:11 PM
Moon Transit: 4:14 AM
Moonset: 9:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:44 AM - 6:14 AM
4:25 PM - 6:55 PM

Minor Periods

12:00 AM - 12:00 AM
9:19 AM - 10:49 AM

Action Rating: 2 out of 5

Sunday, July 5, 2026

Weather Forecast

Partly Cloudy
82.2°F
67.8°F
76°F
70%
0.15 in
60%
0%
11.2 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 5.92 μg/m3
PM10: 6.28 μg/m3
Carbon Monoxide: 147.97 μg/m3
Nitrogen Dioxide: 7.25 μg/m3
Sulphur Dioxide: 1.96 μg/m3
Ozone: 98.21 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 6 mins
Moonrise: 12:11 AM
Moon Transit: 4:57 AM
Moonset: 10:54 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
5:07 PM - 7:37 PM

Minor Periods

10:24 AM - 11:54 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 6, 2026

Weather Forecast

Overcast
72.9°F
62.2°F
66.2°F
72%
0.01 in
23%
0%
8.5 mph
3.8


Air Quality

AQI: 1 - Good
PM2.5: 6.4 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 188.88 μg/m3
Nitrogen Dioxide: 9.69 μg/m3
Sulphur Dioxide: 1.78 μg/m3
Ozone: 75.88 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 5 mins
Moonrise: 12:31 AM
Moon Transit: 12:15 AM
Moonset: 12:01 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

11:31 AM - 1:01 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.

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