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

Current Water Temperature

32.0°F

Measurement Time: Thursday, July 2, 2026, 4:07 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

82°F
Partly cloudy
Partly cloudy
88.6°F
91.7°F
79%
SW 8.1 mph
9.8 mph
83.5°F
75.5°F
0 in
50%
9 mi
1017 mbar
1.7

Five Day Weather Forecast

Sunny
Thu
H: 102°F
L: 78°F
Sunny
Fri
H: 92°F
L: 74°F
Sunny
Sat
H: 94°F
L: 71°F
Sunny
Sun
H: 86°F
L: 69°F
Sunny
Mon
H: 88°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 8 μg/m3
PM10: 9.3 μg/m3
Carbon Monoxide: 137 μg/m3
Nitrogen Dioxide: 9.2 μg/m3
Sulphur Dioxide: 3.1 μg/m3
Ozone: 74 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.


Marine Weather Statement issued July 2 at 7:04AM CDT by NWS Chicago IL

Effective: Thu July 2, 2026, 7:04 AM
Expires: Thu July 2, 2026, 8:30 AM

A Marine Weather Statement has been issued for the following areas... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... At 700 AM CDT, Doppler radar indicated a gust front, capable of producing a northerly wind shift with gusts to around 25 knots. This gust front was located along a line extending from 28 nm east of Winthrop Harbor to 7 nm northwest of Wilmette Harbor, moving southeast at 25 knots. Several land and marine based weather stations have recorded wind gusts up to 25 knots.

Mariners can expect gusty northerly winds to around 25 knots and locally higher waves. Boaters should seek safe harbor until this outflow passes.
Thursday, July 2, 2026

Weather Forecast

Sunny
101.7°F
77.7°F
87.5°F
67%
0 in
4%
0%
13.4 mph
10


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
91.5°F
74.1°F
82.5°F
66%
0.15 in
57%
0%
10.5 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
93.6°F
71.3°F
81.2°F
77%
0.34 in
72%
0%
11.9 mph
9


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

Sunny
86.3°F
68.5°F
76°F
82%
0.06 in
62%
0%
7.4 mph
6.3


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

Sunny
87.6°F
64°F
72.2°F
78%
0.21 in
69%
0%
7.2 mph
7


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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