Water Temperature of the Chicago Sanitary and Ship Canal in Romeoville, IL

Current Water Temperature

59.2°F

Measurement Time: Friday, May 1, 2026, 9:00 PM CDT

Temperature Locations

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Chicago Sanitary and Ship Canal

Station Name: CHICAGO SANITARY AND SHIP CANAL AT ROMEOVILLE, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 581 feet

Nearest Address:
790 E Old Romeo Rd
Romeoville, IL 60446
Will County

GPS Coordinates: 41.6408333, -88.0594444

Nearby Water Temperatures

Des Plaines River, Lockport, IL (5 mi)
Des Plaines River, Joliet, IL (7.3 mi)
Des Plaines River, Rockdale, IL (10 mi)
Des Plaines River, Channahon, IL (17.6 mi)
Cal-Sag Channel, Blue Island, IL (20.1 mi)
Kankakee River, Morris, IL (20.3 mi)
Kankakee River, Wilmington, IL (21.4 mi)
Chicago River, Chicago, IL (23.6 mi)
Grand Calumet River, Chicago, IL (25.7 mi)
Kankakee River, Custer Park, IL (27.5 mi)
Grand Calumet River, Hammond, IN (28.9 mi)
Plum Creek, Dyer, IN (29.8 mi)
Hanson Gravel Pit, Morris, IL (29.9 mi)
Hart Ditch, Munster, IN (30.4 mi)
Indiana Harbor Canal, East Chicago, IN (30.5 mi)

Weather for Romeoville, Illinois

Current Weather

36.3°F
Clear
Clear
34.3°F
33.3°F
80%
SSW 2.9 mph
5.4 mph
31.4°F
26.5°F
0 in
0%
9 mi
1020 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 55°F
L: 32°F
Patchy rain nearby
Sun
H: 64°F
L: 43°F
Moderate rain
Mon
H: 73°F
L: 52°F
Patchy rain nearby
Tue
H: 57°F
L: 43°F
Patchy rain nearby
Wed
H: 55°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 11.85 μg/m3
PM10: 12.55 μg/m3
Carbon Monoxide: 200.85 μg/m3
Nitrogen Dioxide: 13.25 μg/m3
Sulphur Dioxide: 5.15 μg/m3
Ozone: 61 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:49 AM
Sunset: 7:52 PM
Daylight: 14 hrs 4 mins
Moonrise: 9:22 PM
Moon Transit: 1:06 AM
Moonset: 5:49 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
1:16 PM - 3:46 PM

Minor Periods

8:52 PM - 10:22 PM
5:19 AM - 6:49 AM

Action Rating: 4 out of 5

Frost Advisory issued May 1 at 2:18PM CDT until May 2 at 8:00AM CDT by NWS Chicago IL

Effective: Fri May 1, 2026, 2:18 PM
Expires: Sat May 2, 2026, 12:30 AM

* WHAT...Temperatures as low as 32 degrees Fahrenheit will result in frost formation. * WHERE...Portions of east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 1 AM CDT /2 AM EDT/ to 8 AM CDT /9 AM EDT/ Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued May 1 at 9:01PM CDT until May 2 at 8:00AM CDT by NWS Chicago IL

Effective: Fri May 1, 2026, 9:01 PM
Expires: Sat May 2, 2026, 7:15 AM

* WHAT...Temperatures as low as 32 degrees will result in frost formation. * WHERE...Portions of east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 1 AM CDT /2 AM EDT/ to 8 AM CDT /9 AM EDT/ Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Flood Warning issued May 1 at 9:56AM CDT until May 5 at 1:00AM CDT by NWS Chicago IL

Effective: Fri May 1, 2026, 9:56 AM
Expires: Sat May 2, 2026, 4:00 AM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, Kane and McHenry Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until early Tuesday morning. * IMPACTS...At 11.0 feet, Structures threatened near Elgin Avenue and Corey Street south of East Dundee. Lincoln Avenue threatened in West Dundee. Filip Street and Fox River Drive threatened in Algonquin. Fox River Trail threatened south of downtown Elgin. * ADDITIONAL DETAILS... - At 9:30 AM CDT Friday the stage was 10.9 feet. - Forecast...The river is expected to continue a gradual fall. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.


Flood Warning issued May 1 at 9:01PM CDT until May 5 at 1:00AM CDT by NWS Chicago IL

Effective: Fri May 1, 2026, 9:01 PM
Expires: Sat May 2, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until early Tuesday morning. * IMPACTS...At 11.0 feet, Structures threatened near Elgin Avenue and Corey Street south of East Dundee. Lincoln Avenue threatened in West Dundee. Filip Street and Fox River Drive threatened in Algonquin. Fox River Trail threatened south of downtown Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 10.8 feet. - Forecast...The river is expected to continue a gradual fall. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood

These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. Additional information is available at www.weather.gov. The next statement will be issued by Saturday afternoon.


Frost Advisory issued May 1 at 9:01PM CDT until May 2 at 8:00AM CDT by NWS Chicago IL

Effective: Fri May 1, 2026, 9:01 PM
Expires: Sat May 2, 2026, 7:15 AM

* WHAT...Temperatures as low as 35 degrees will result in frost formation. * WHERE...La Salle and Grundy Counties. * WHEN...From 1 AM to 8 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Saturday, May 2, 2026

Weather Forecast

Sunny
55°F
31.6°F
44.8°F
54%
0 in
0%
0%
9.8 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 12.77 μg/m3
PM10: 14 μg/m3
Carbon Monoxide: 207.29 μg/m3
Nitrogen Dioxide: 20.47 μg/m3
Sulphur Dioxide: 4.99 μg/m3
Ozone: 59.92 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:49 AM
Sunset: 7:52 PM
Daylight: 14 hrs 4 mins
Moonrise: 9:22 PM
Moon Transit: 1:06 AM
Moonset: 5:49 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
1:16 PM - 3:46 PM

Minor Periods

8:52 PM - 10:22 PM
5:19 AM - 6:49 AM

Action Rating: 4 out of 5

Sunday, May 3, 2026

Weather Forecast

Patchy rain nearby
64.4°F
42.7°F
52.3°F
70%
0.1 in
88%
0%
19.7 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 9.28 μg/m3
PM10: 10.55 μg/m3
Carbon Monoxide: 177.01 μg/m3
Nitrogen Dioxide: 10.35 μg/m3
Sulphur Dioxide: 2.68 μg/m3
Ozone: 76.8 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:49 AM
Sunset: 7:53 PM
Daylight: 14 hrs 6 mins
Moonrise: 10:25 PM
Moon Transit: 1:54 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
2:05 PM - 4:35 PM

Minor Periods

9:55 PM - 11:25 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Moderate rain
73.3°F
52.2°F
60.8°F
81%
0.24 in
89%
0%
19 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 9.33 μg/m3
PM10: 10.26 μg/m3
Carbon Monoxide: 186.37 μg/m3
Nitrogen Dioxide: 13.9 μg/m3
Sulphur Dioxide: 3.72 μg/m3
Ozone: 76.28 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:49 AM
Sunset: 7:54 PM
Daylight: 14 hrs 9 mins
Moonrise: 11:21 PM
Moon Transit: 2:44 AM
Moonset: 7:02 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
2:56 PM - 5:26 PM

Minor Periods

12:00 AM - 12:00 AM
6:32 AM - 8:02 AM

Action Rating: 2 out of 5

Tuesday, May 5, 2026

Weather Forecast

Patchy rain nearby
56.5°F
42.5°F
50.2°F
60%
0.03 in
56%
0%
9.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 10.62 μg/m3
PM10: 11.78 μg/m3
Carbon Monoxide: 176.91 μg/m3
Nitrogen Dioxide: 14.44 μg/m3
Sulphur Dioxide: 4.57 μg/m3
Ozone: 76.6 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:48 AM
Sunset: 7:55 PM
Daylight: 14 hrs 11 mins
Moonrise: 12:21 AM
Moon Transit: 3:35 AM
Moonset: 7:50 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:05 AM - 5:35 AM
3:47 PM - 6:17 PM

Minor Periods

7:20 AM - 8:50 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, May 6, 2026

Weather Forecast

Patchy rain nearby
55.1°F
41.4°F
47.5°F
70%
0.02 in
82%
0%
8.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.84 μg/m3
PM10: 5.07 μg/m3
Carbon Monoxide: 172.21 μg/m3
Nitrogen Dioxide: 12.36 μg/m3
Sulphur Dioxide: 4.19 μg/m3
Ozone: 75.62 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:48 AM
Sunset: 7:56 PM
Daylight: 14 hrs 13 mins
Moonrise: 12:11 AM
Moon Transit: 4:27 AM
Moonset: 8:46 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

3:57 AM - 6:27 AM
4:38 PM - 7:08 PM

Minor Periods

8:16 AM - 9:46 AM
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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