Water Temperature of the Mississippi River in Alton, IL

Current Water Temperature

32.0°F

Measurement Time: Sunday, January 25, 2026, 9:00 AM CST

Temperature Locations

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Local Points of Interest

Maple Island; St. Louis, MO; Wood River, IL; Edward "Ted" and Pat Jones-Confluence Point State Park

Mississippi River

Station Name: Alton 2SE - Melvin Price L&D
Data Source: USGS

Elevation Above Sea Level: 407 feet

Nearest Address:
Lock and Dam Way
Alton, IL 62002
Madison County

GPS Coordinates: 38.8664, -90.1464

Nearby Water Temperatures

Missouri River, St Charles, MO (18.4 mi)
Mississippi River, Cap Au Gris, MO (30.6 mi)
Missouri River, Labadle, MO (42.7 mi)
Mississippi River, Clarksville, MO (53.7 mi)
Illinois River, Florence, IL (58.4 mi)
Sugar Creek, Chatham, IL (60.7 mi)
Lick Creek, Springfield, IL (63.3 mi)
Big River, Bonne Terre, MO (66.4 mi)
Missouri River, Hermann, MO (70.4 mi)
Illinois River, La Grange, IL (77 mi)
Mississippi River, Saverton, MO (79.4 mi)
Huzzah Creek, Butts, MO (84.1 mi)
East Fork Black River, Lesterville, MO (98.3 mi)
Mississippi River, Quincy, IL (99.1 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (101.6 mi)

Weather for Alton, Illinois

Current Weather

72°F
Mostly Clear
Mostly Clear
79%
SE 8 mph
65°F

Weather Forecast

Mostly Clear
Overnight
71°F - Mostly Clear
Sunny then Chance Showers And Thunderstorms
Tuesday
101°F - Sunny then Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Tuesday Night
73°F - Showers And Thunderstorms Likely
Chance Showers And Thunderstorms then Partly Sunny
Wednesday
97°F - Chance Showers And Thunderstorms then Partly Sunny
Partly Cloudy
Wednesday Night
75°F - Partly Cloudy
Sunny
Thursday
98°F - Sunny
Partly Cloudy
Thursday Night
73°F - Partly Cloudy
Sunny
Friday
96°F - Sunny
Mostly Clear
Friday Night
73°F - Mostly Clear
Mostly Sunny
Saturday
95°F - Mostly Sunny
Chance Showers And Thunderstorms
Saturday Night
70°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Sunday
86°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Sunday Night
63°F - Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Monday
80°F - Slight Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:33 AM
Moon Transit: 4:26 PM
Moonset: 9:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
3:56 PM - 6:26 PM

Minor Periods

8:43 PM - 10:13 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:33 AM
Moon Transit: 4:26 PM
Moonset: 9:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
3:56 PM - 6:26 PM

Minor Periods

8:43 PM - 10:13 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:33 AM
Moon Transit: 4:26 PM
Moonset: 9:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
3:56 PM - 6:26 PM

Minor Periods

8:43 PM - 10:13 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:33 AM
Moon Transit: 4:26 PM
Moonset: 9:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
3:56 PM - 6:26 PM

Minor Periods

8:43 PM - 10:13 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 12:55 AM
Sunset: 7:07 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:37 AM
Moon Transit: 5:15 PM
Moonset: 9:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
4:45 PM - 7:15 PM

Minor Periods

9:20 PM - 10:50 PM
12:07 AM - 1:37 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 12:55 AM
Sunset: 7:07 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:37 AM
Moon Transit: 5:15 PM
Moonset: 9:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
4:45 PM - 7:15 PM

Minor Periods

9:20 PM - 10:50 PM
12:07 AM - 1:37 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:55 AM
Sunset: 7:05 PM
Daylight: 12 hrs 21 mins
Moonrise: 1:36 PM
Moon Transit: 6:06 PM
Moonset: 10:34 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

5:09 AM - 7:39 AM
5:36 PM - 8:06 PM

Minor Periods

10:04 PM - 11:34 PM
1:06 PM - 2:36 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:55 AM
Sunset: 7:05 PM
Daylight: 12 hrs 21 mins
Moonrise: 1:36 PM
Moon Transit: 6:06 PM
Moonset: 10:34 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

5:09 AM - 7:39 AM
5:36 PM - 8:06 PM

Minor Periods

10:04 PM - 11:34 PM
1:06 PM - 2:36 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:32 PM
Moon Transit: 6:57 PM
Moonset: 11:25 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

6:00 AM - 8:30 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
2:02 PM - 3:32 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:32 PM
Moon Transit: 6:57 PM
Moonset: 11:25 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

6:00 AM - 8:30 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
2:02 PM - 3:32 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:54 AM
Sunset: 7:02 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:19 PM
Moon Transit: 7:49 PM
Moonset: 12:25 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

6:52 AM - 9:22 AM
7:19 PM - 9:49 PM

Minor Periods

2:49 PM - 4:19 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:54 AM
Sunset: 7:02 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:19 PM
Moon Transit: 7:49 PM
Moonset: 12:25 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

6:52 AM - 9:22 AM
7:19 PM - 9:49 PM

Minor Periods

2:49 PM - 4:19 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:00 PM
Moon Transit: 8:38 PM
Moonset: 12:22 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

7:42 AM - 10:12 AM
8:08 PM - 10:38 PM

Minor Periods

3:30 PM - 5:00 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:00 PM
Moon Transit: 8:38 PM
Moonset: 12:22 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

7:42 AM - 10:12 AM
8:08 PM - 10:38 PM

Minor Periods

3:30 PM - 5:00 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 12:53 AM
Sunset: 6:59 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:35 PM
Moon Transit: 9:26 PM
Moonset: 1:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

8:31 AM - 11:01 AM
8:56 PM - 11:26 PM

Minor Periods

4:05 PM - 5:35 PM
12:52 AM - 2:22 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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