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

Current Water Temperature

32.0°F

Measurement Time: Monday, July 27, 2026, 1:06 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

76.5°F
Mist
Mist
65.7°F
81.9°F
96%
SW 6.5 mph
13.6 mph
76.5°F
75.2°F
0 in
65%
6 mi
1009 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 100°F
L: 75°F
Sunny
Tue
H: 84°F
L: 71°F
Sunny
Wed
H: 85°F
L: 67°F
Sunny
Thu
H: 88°F
L: 65°F
Sunny
Fri
H: 75°F
L: 67°F

Air Quality

AQI: 2 - Moderate
PM2.5: 14.3 μg/m3
PM10: 14.6 μg/m3
Carbon Monoxide: 139 μg/m3
Nitrogen Dioxide: 20.2 μg/m3
Sulphur Dioxide: 2.4 μg/m3
Ozone: 40 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:57 AM
Sunset: 8:14 PM
Daylight: 14 hrs 34 mins
Moonrise: 7:28 PM
Moon Transit: 11:53 PM
Moonset: 3:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

11:17 AM - 1:47 PM
12:00 AM - 12:00 AM

Minor Periods

6:58 PM - 8:28 PM
2:52 AM - 4:22 AM

Action Rating: 3 out of 5

Heat Advisory issued July 27 at 3:02AM CDT until July 27 at 9:00PM CDT by NWS Chicago IL

Effective: Mon July 27, 2026, 3:02 AM
Expires: Mon July 27, 2026, 1:15 PM

* WHAT...Peak heat index values up to 100 to 110 degrees expected. * WHERE...Portions of east central and northeast Illinois and northwest Indiana. * WHEN...Until 9 PM CDT /10 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Beach Hazards Statement issued July 27 at 3:47AM EDT until July 29 at 8:00AM EDT by NWS Northern Indiana

Effective: Mon July 27, 2026, 2:47 AM
Expires: Mon July 27, 2026, 11:00 AM

* WHAT...Life-threatening waves and currents expected. - High wave action: Waves 3 to 4 feet Tuesday morning, increasing to 6 to 8 feet Tuesday afternoon and evening. - Life threatening rip, longshore, and structural currents are expected. Structural currents may be especially strong on the north sides of piers or breakwalls Tuesday afternoon and evening. * WHERE...In Indiana, Northern La Porte county. In Michigan, Northern Berrien and Southern Berrien counties. * WHEN...From late tonight through Wednesday morning. * 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 27, 2026

Weather Forecast

Sunny
99.9°F
74.7°F
83.7°F
81%
1.29 in
77%
0%
12.5 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 10.48 μg/m3
PM10: 10.87 μg/m3
Carbon Monoxide: 161.92 μg/m3
Nitrogen Dioxide: 16.68 μg/m3
Sulphur Dioxide: 2.82 μg/m3
Ozone: 76.17 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:57 AM
Sunset: 8:14 PM
Daylight: 14 hrs 34 mins
Moonrise: 7:28 PM
Moon Transit: 11:53 PM
Moonset: 3:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

11:17 AM - 1:47 PM
12:00 AM - 12:00 AM

Minor Periods

6:58 PM - 8:28 PM
2:52 AM - 4:22 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
84°F
71.1°F
77.3°F
65%
0.05 in
57%
0%
13.9 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 10.09 μg/m3
PM10: 10.42 μg/m3
Carbon Monoxide: 158.25 μg/m3
Nitrogen Dioxide: 8.25 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 81.25 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:57 AM
Sunset: 8:13 PM
Daylight: 14 hrs 32 mins
Moonrise: 8:02 PM
Moon Transit: 12:00 AM
Moonset: 4:25 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:07 AM - 2:37 PM

Minor Periods

7:32 PM - 9:02 PM
3:55 AM - 5:25 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
84.9°F
66.6°F
75.7°F
47%
0 in
1%
0%
8.7 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 7.37 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 147.54 μg/m3
Nitrogen Dioxide: 8.92 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 69.46 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:57 AM
Sunset: 8:12 PM
Daylight: 14 hrs 30 mins
Moonrise: 8:31 PM
Moon Transit: 12:42 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:12 AM - 2:42 AM
12:55 AM - 3:25 PM

Minor Periods

8:01 PM - 9:31 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
88.3°F
65.3°F
77°F
52%
0 in
2%
0%
8.7 mph
8.3


Air Quality

AQI: 2 - Moderate
PM2.5: 15.57 μg/m3
PM10: 15.81 μg/m3
Carbon Monoxide: 231.78 μg/m3
Nitrogen Dioxide: 25.78 μg/m3
Sulphur Dioxide: 4.75 μg/m3
Ozone: 72.75 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:57 AM
Sunset: 8:11 PM
Daylight: 14 hrs 28 mins
Moonrise: 8:55 PM
Moon Transit: 1:28 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 AM
1:40 PM - 4:10 PM

Minor Periods

8:25 PM - 9:55 PM
6:06 AM - 7:36 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
75.3°F
66.8°F
69.7°F
91%
0.39 in
89%
0%
9.2 mph
5


Air Quality

AQI: 2 - Moderate
PM2.5: 15.93 μg/m3
PM10: 16.18 μg/m3
Carbon Monoxide: 323.5 μg/m3
Nitrogen Dioxide: 33.53 μg/m3
Sulphur Dioxide: 2.94 μg/m3
Ozone: 36 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:57 AM
Sunset: 8:10 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:17 PM
Moon Transit: 2:13 AM
Moonset: 7:41 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
2:24 PM - 4:54 PM

Minor Periods

8:47 PM - 10:17 PM
7:11 AM - 8:41 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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