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

Current Water Temperature

32.0°F

Measurement Time: Saturday, August 1, 2026, 10:08 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

74.5°F
Patchy rain nearby
Patchy rain nearby
75.9°F
78.2°F
84%
NE 10.7 mph
15.9 mph
74.5°F
69.5°F
0 in
72%
6 mi
1006 mbar
0.4

Five Day Weather Forecast

Patchy rain nearby
Sat
H: 76°F
L: 68°F
Patchy rain nearby
Sun
H: 76°F
L: 67°F
Sunny
Mon
H: 80°F
L: 65°F
Sunny
Tue
H: 86°F
L: 64°F
Sunny
Wed
H: 88°F
L: 66°F

Air Quality

AQI: 2 - Moderate
PM2.5: 6.5 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 150 μg/m3
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:57 AM
Sunset: 8:08 PM
Daylight: 14 hrs 23 mins
Moonrise: 9:37 PM
Moon Transit: 2:56 AM
Moonset: 8:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
3:07 PM - 5:37 PM

Minor Periods

9:07 PM - 10:37 PM
8:17 AM - 9:47 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued August 1 at 3:18AM CDT until August 3 at 9:00AM CDT by NWS Chicago IL

Effective: Sat August 1, 2026, 3:18 AM
Expires: Sat August 1, 2026, 11:30 AM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 6 to 9 feet expected. * WHERE...Lake IN and Porter Counties. * WHEN...From 9 AM CDT this morning through Monday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Beach Hazards Statement issued August 1 at 10:19AM CDT until August 3 at 9:00AM CDT by NWS Chicago IL

Effective: Sat August 1, 2026, 10:19 AM
Expires: Sat August 1, 2026, 6:30 PM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 6 to 9 ft expected. * WHERE...Lake IN and Porter Counties. * WHEN...Through Monday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Small Craft Advisory issued August 1 at 3:05AM CDT until August 3 at 3:00AM CDT by NWS Chicago IL

Effective: Sat August 1, 2026, 3:05 AM
Expires: Sat August 1, 2026, 11:15 AM

* WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM this morning to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued August 1 at 10:10AM CDT until August 3 at 3:00AM CDT by NWS Chicago IL

Effective: Sat August 1, 2026, 10:10 AM
Expires: Sat August 1, 2026, 6:15 PM

* WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Saturday, August 1, 2026

Weather Forecast

Patchy rain nearby
75.6°F
67.5°F
69.9°F
87%
0.33 in
83%
0%
14.1 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.31 μg/m3
Carbon Monoxide: 153.83 μg/m3
Nitrogen Dioxide: 7.38 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 80.04 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:57 AM
Sunset: 8:08 PM
Daylight: 14 hrs 23 mins
Moonrise: 9:37 PM
Moon Transit: 2:56 AM
Moonset: 8:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
3:07 PM - 5:37 PM

Minor Periods

9:07 PM - 10:37 PM
8:17 AM - 9:47 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Patchy rain nearby
76.2°F
67.2°F
70.3°F
83%
0.02 in
49%
0%
13.2 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 7.12 μg/m3
PM10: 7.23 μg/m3
Carbon Monoxide: 135.42 μg/m3
Nitrogen Dioxide: 4.63 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 83.58 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:56 AM
Sunset: 8:07 PM
Daylight: 14 hrs 21 mins
Moonrise: 9:58 PM
Moon Transit: 3:39 AM
Moonset: 9:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
5:20 PM - 7:50 PM

Minor Periods

9:28 PM - 10:58 PM
9:23 AM - 10:53 AM

Action Rating: 4 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
80°F
65.3°F
72.2°F
71%
0 in
8%
0%
8.1 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 6.3 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 140.54 μg/m3
Nitrogen Dioxide: 8.63 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 72.96 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:56 AM
Sunset: 8:06 PM
Daylight: 14 hrs 19 mins
Moonrise: 10:20 PM
Moon Transit: 12:00 AM
Moonset: 11:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:34 PM - 7:04 PM

Minor Periods

9:50 PM - 11:20 PM
10:31 AM - 12:01 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
85.8°F
63.9°F
75.1°F
62%
0 in
4%
0%
6 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 9.83 μg/m3
PM10: 9.87 μg/m3
Carbon Monoxide: 165.83 μg/m3
Nitrogen Dioxide: 15.03 μg/m3
Sulphur Dioxide: 4.53 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:56 AM
Sunset: 8:05 PM
Daylight: 14 hrs 17 mins
Moonrise: 10:45 PM
Moon Transit: 5:08 AM
Moonset: 12:11 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
5:22 PM - 7:52 PM

Minor Periods

10:15 PM - 11:45 PM
11:41 AM - 1:11 PM

Action Rating: 3 out of 5

Wednesday, August 5, 2026

Weather Forecast

Sunny
87.5°F
66.4°F
77.6°F
59%
0 in
5%
0%
6 mph
8


Air Quality

AQI: 2 - Moderate
PM2.5: 19.19 μg/m3
PM10: 19.24 μg/m3
Carbon Monoxide: 323.75 μg/m3
Nitrogen Dioxide: 32.86 μg/m3
Sulphur Dioxide: 4.23 μg/m3
Ozone: 44.88 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:56 AM
Sunset: 8:04 PM
Daylight: 14 hrs 15 mins
Moonrise: 11:15 PM
Moon Transit: 5:57 AM
Moonset: 1:24 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
6:13 PM - 8:43 PM

Minor Periods

12:00 AM - 12:00 AM
12:54 AM - 2:24 PM

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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