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

Current Water Temperature

32.0°F

Measurement Time: Monday, July 20, 2026, 7:56 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

79°F
Overcast
Overcast
79.7°F
93.1°F
58%
SW 8.7 mph
10 mph
89.4°F
66.2°F
0 in
100%
6 mi
1013 mbar
6.4

Five Day Weather Forecast

Sunny
Mon
H: 92°F
L: 64°F
Sunny
Tue
H: 86°F
L: 68°F
Sunny
Wed
H: 77°F
L: 61°F
Sunny
Thu
H: 80°F
L: 60°F
Sunny
Fri
H: 80°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 28.2 μg/m3
PM10: 28.8 μg/m3
Carbon Monoxide: 274 μg/m3
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 4.2 μg/m3
Ozone: 130 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:57 AM
Sunset: 8:20 PM
Daylight: 14 hrs 46 mins
Moonrise: 12:45 AM
Moon Transit: 6:12 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
5:42 PM - 8:12 PM

Minor Periods

12:15 AM - 1:45 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued July 20 at 11:22AM EDT until July 23 at 1:00AM EDT by NWS Northern Indiana

Effective: Mon July 20, 2026, 10:22 AM
Expires: Mon July 20, 2026, 6:30 PM

* WHAT...WHAT...Life-threatening waves and currents expected. - High wave action: Waves building to 3 to 5 feet tonight through Tuesday. Waves building to 5 to 9 feet Tuesday night into Wednesday before receding Wednesday night. - Life threatening rip, longshore, and structural currents are expected. Structural currents may be especially strong on the north sides of piers or breakwalls into the evening. * WHERE...Northern Berrien and Southern Berrien counties. * WHEN...From late tonight through late Wednesday night. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

Remain out of the water to avoid hazardous swimming conditions. Do not venture out on piers.
Monday, July 20, 2026

Weather Forecast

Sunny
92.3°F
64.2°F
78.1°F
66%
0.02 in
36%
0%
9.8 mph
6.5


Air Quality

AQI: 2 - Moderate
PM2.5: 30.98 μg/m3
PM10: 31.39 μg/m3
Carbon Monoxide: 257.67 μg/m3
Nitrogen Dioxide: 12.5 μg/m3
Sulphur Dioxide: 4.27 μg/m3
Ozone: 98.33 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:57 AM
Sunset: 8:20 PM
Daylight: 14 hrs 46 mins
Moonrise: 12:45 AM
Moon Transit: 6:12 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
5:42 PM - 8:12 PM

Minor Periods

12:15 AM - 1:45 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
86.2°F
68.2°F
76.5°F
72%
0.2 in
66%
0%
14.8 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 5.66 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 143.42 μg/m3
Nitrogen Dioxide: 5.71 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 99.38 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:57 AM
Sunset: 8:19 PM
Daylight: 14 hrs 45 mins
Moonrise: 1:50 PM
Moon Transit: 6:56 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

6:23 AM - 8:53 AM
6:26 PM - 8:56 PM

Minor Periods

1:20 PM - 2:50 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
77.2°F
61.4°F
67.3°F
56%
0 in
17%
0%
10.5 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 8.14 μg/m3
PM10: 8.45 μg/m3
Carbon Monoxide: 129.5 μg/m3
Nitrogen Dioxide: 4.29 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 84.42 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:57 AM
Sunset: 8:18 PM
Daylight: 14 hrs 43 mins
Moonrise: 2:56 PM
Moon Transit: 7:42 PM
Moonset: 12:55 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
7:12 PM - 9:42 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
80.4°F
59.5°F
70.1°F
56%
0 in
3%
0%
9.2 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 11.15 μg/m3
PM10: 11.52 μg/m3
Carbon Monoxide: 206.72 μg/m3
Nitrogen Dioxide: 13.33 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 81.58 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:57 AM
Sunset: 8:18 PM
Daylight: 14 hrs 41 mins
Moonrise: 3:59 PM
Moon Transit: 8:30 PM
Moonset: 12:24 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

7:55 AM - 10:25 AM
8:00 PM - 10:30 PM

Minor Periods

3:29 PM - 4:59 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
80°F
63.5°F
69.8°F
65%
0 in
8%
0%
7.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.09 μg/m3
PM10: 8.24 μg/m3
Carbon Monoxide: 209.5 μg/m3
Nitrogen Dioxide: 22.83 μg/m3
Sulphur Dioxide: 5.33 μg/m3
Ozone: 36.88 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 12:57 AM
Sunset: 8:17 PM
Daylight: 14 hrs 39 mins
Moonrise: 5:01 PM
Moon Transit: 9:20 PM
Moonset: 12:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:31 PM - 6:01 PM
12:27 AM - 1:57 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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