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

Current Water Temperature

32.0°F

Measurement Time: Wednesday, June 17, 2026, 11:36 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

62.1°F
Overcast
Overcast
62.1°F
59°F
93%
NE 6.7 mph
10 mph
58.5°F
57.1°F
0.08 in
100%
9 mi
997 mbar
0.1

Five Day Weather Forecast

Heavy rain
Wed
H: 67°F
L: 56°F
Partly Cloudy
Thu
H: 75°F
L: 59°F
Sunny
Fri
H: 75°F
L: 58°F
Sunny
Sat
H: 78°F
L: 59°F
Moderate rain
Sun
H: 64°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 4.8 μg/m3
PM10: 5.1 μg/m3
Carbon Monoxide: 136 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 85 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:51 AM
Sunset: 8:28 PM
Daylight: 15 hrs 12 mins
Moonrise: 7:54 AM
Moon Transit: 3:38 PM
Moonset: 11:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
3:08 PM - 5:38 PM

Minor Periods

12:00 AM - 12:00 AM
7:24 AM - 8:54 AM

Action Rating: 3 out of 5

Special Marine Warning issued June 17 at 10:58AM CDT until June 17 at 1:30PM CDT by NWS Chicago IL

Effective: Wed June 17, 2026, 10:58 AM
Expires: Wed June 17, 2026, 1:30 PM

For the following areas... Nearshore Waters from Winthrop Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1057 AM CDT, an abrupt increase in winds was approaching the lake, located along a line extending from near Waukegan Harbor to 7 nm north of Ohare Airport to near Aurora, moving east at 45 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Winthrop Harbor, Indiana Harbor, Montrose Harbor, Waukegan Harbor, Burnham Harbor, and Hammond Marina.

Seek safe shelter...mariners can expect gusty winds and increasing waves.


Special Marine Warning issued June 17 at 10:29AM CDT until June 17 at 1:30PM CDT by NWS Chicago IL

Effective: Wed June 17, 2026, 10:29 AM
Expires: Wed June 17, 2026, 1:30 PM

SMWLOT The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Winthrop Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... * Until 130 PM CDT. * At 1028 AM CDT, an abrupt increase in winds was approaching the lake, located along a line extending from 8 nm north of McHenry to 8 nm north of Elgin to 21 nm northwest of Aurora, moving east southeast at 45 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Winthrop Harbor, Indiana Harbor, Montrose Harbor, Waukegan Harbor, Burnham Harbor, and Hammond Marina.

Seek safe shelter, mariners can expect gusty winds and increasing waves.
Wednesday, June 17, 2026

Weather Forecast

Heavy rain
67.1°F
56.3°F
61.4°F
81%
1.04 in
78%
0%
15.2 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 4.85 μg/m3
Carbon Monoxide: 141.96 μg/m3
Nitrogen Dioxide: 11.4 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 62.54 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:51 AM
Sunset: 8:28 PM
Daylight: 15 hrs 12 mins
Moonrise: 7:54 AM
Moon Transit: 3:38 PM
Moonset: 11:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
3:08 PM - 5:38 PM

Minor Periods

12:00 AM - 12:00 AM
7:24 AM - 8:54 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Partly Cloudy
74.7°F
58.5°F
66°F
64%
0 in
9%
0%
18.3 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 3.4 μg/m3
PM10: 3.46 μg/m3
Carbon Monoxide: 132.96 μg/m3
Nitrogen Dioxide: 7.28 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 69.25 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:51 AM
Sunset: 8:28 PM
Daylight: 15 hrs 12 mins
Moonrise: 9:13 AM
Moon Transit: 4:33 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
4:03 PM - 6:33 PM

Minor Periods

8:43 AM - 10:13 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Sunny
74.8°F
58°F
66.5°F
60%
0 in
17%
0%
11.9 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 5.04 μg/m3
PM10: 5.13 μg/m3
Carbon Monoxide: 142.79 μg/m3
Nitrogen Dioxide: 11.28 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 59.42 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:52 AM
Sunset: 8:28 PM
Daylight: 15 hrs 13 mins
Moonrise: 10:29 AM
Moon Transit: 5:22 PM
Moonset: 12:39 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
4:52 PM - 7:22 PM

Minor Periods

9:59 AM - 11:29 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, June 20, 2026

Weather Forecast

Sunny
77.8°F
58.8°F
68.4°F
60%
0 in
4%
0%
10.7 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 5.34 μg/m3
PM10: 5.73 μg/m3
Carbon Monoxide: 136.37 μg/m3
Nitrogen Dioxide: 10.98 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 68.96 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:52 AM
Sunset: 8:29 PM
Daylight: 15 hrs 13 mins
Moonrise: 11:39 AM
Moon Transit: 6:08 PM
Moonset: 12:03 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
5:38 PM - 8:08 PM

Minor Periods

11:09 AM - 12:39 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Sunday, June 21, 2026

Weather Forecast

Moderate rain
63.9°F
56.6°F
61.2°F
73%
0.59 in
77%
0%
14.1 mph
3.1


Air Quality

AQI: 1 - Good
PM2.5: 12.11 μg/m3
PM10: 12.3 μg/m3
Carbon Monoxide: 190.38 μg/m3
Nitrogen Dioxide: 29.76 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 36.63 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:52 AM
Sunset: 8:29 PM
Daylight: 15 hrs 13 mins
Moonrise: 12:47 AM
Moon Transit: 6:51 PM
Moonset: 12:25 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

6:19 AM - 8:49 AM
6:21 PM - 8:51 PM

Minor Periods

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