Water Temperature of the Mississippi River in Alton, IL

Current Water Temperature

39.5°F

Measurement Time: Sunday, January 21, 2024, 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

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Mississippi River

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

Elevation Above Sea Level: 407 feet / 124 meters

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 (77.0 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

68.5°F
Light rain
Conditions: Light rain
Humidity: 100%
Feels Like: 68.5°F
Wind: NW 2.5 mph
Wind Gusts: 4.7 mph
Pressure: 29.98 in
Precipitation: 0.31 in
Cloud Cover: 100%
Visibility: 3 mi
UV Index: 0

Five Day Weather Forecast

Heavy rain
Wed
H: 84°F
L: 70°F
Heavy rain
Thu
H: 78°F
L: 62°F
Heavy rain
Fri
H: 79°F
L: 70°F
Moderate rain
Sat
H: 78°F
L: 68°F
Patchy rain nearby
Sun
H: 81°F
L: 64°F

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 21.65 μg/m3
PM10: 22.2 μg/m3
Carbon Monoxide: 558.7 μg/m3
Nitrogen Dioxide: 50.14 μg/m3
Sulphur Dioxide: 4.81 μg/m3
Ozone: 36 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 2:23 PM
Moon Transit: 8:25 PM
Moonset: 1:59 AM
Moon Phase: First Quarter
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

7:34 AM - 10:04 AM
7:55 PM - 10:25 PM

Minor Periods

1:53 PM - 3:23 PM
1:29 AM - 2:59 AM

Action Rating: 3 out of 5

Flood Warning issued June 4 at 9:42AM CDT until June 6 at 4:00PM CDT by NWS St Louis MO

Effective: Wed June 4, 2025, 9:42 AM
Expires: Thu June 5, 2025, 9:45 PM

...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri... Cuivre River near Troy. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Cuivre River near Troy. * WHEN...From this afternoon to Friday afternoon. * IMPACTS...At 23.0 feet, Considerable agricultural land is flooded between Troy and Moscow Mills. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 18.8 feet. - Forecast...The river will rise above flood stage late this afternoon to 23.0 feet just after midnight tonight. It will then fall below flood stage late tomorrow morning to 6.9 feet Tuesday morning. It will rise to 7.0 feet early Tuesday afternoon. It will then fall again and remain below flood stage. - Flood stage is 21.0 feet.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Wednesday, June 4, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 75.1°F
Average Humidity: 83%
Chance of Rain: 82%
Wind: 14.1 mph
UV Index: 1.1

Air Quality

AQI: 2 - Moderate
PM2.5: 26.85 μg/m3
PM10: 27.73 μg/m3
Carbon Monoxide: 410.18 μg/m3
Nitrogen Dioxide: 11.52 μg/m3
Sulphur Dioxide: 3.5 μg/m3
Ozone: 101.8 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 2:23 PM
Moon Transit: 8:25 PM
Moonset: 1:59 AM
Moon Phase: First Quarter
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

7:34 AM - 10:04 AM
7:55 PM - 10:25 PM

Minor Periods

1:53 PM - 3:23 PM
1:29 AM - 2:59 AM

Action Rating: 3 out of 5

Thursday, June 5, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 69.8°F
Average Humidity: 91%
Chance of Rain: 68%
Wind: 6.3 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 17.55 μg/m3
PM10: 18.08 μg/m3
Carbon Monoxide: 430.68 μg/m3
Nitrogen Dioxide: 26.26 μg/m3
Sulphur Dioxide: 3.78 μg/m3
Ozone: 65.88 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 48 mins
Moonrise: 3:21 PM
Moon Transit: 9:04 PM
Moonset: 2:19 AM
Moon Phase: First Quarter
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

8:13 AM - 10:43 AM
8:34 PM - 11:04 PM

Minor Periods

2:51 PM - 4:21 PM
1:49 AM - 3:19 AM

Action Rating: 3 out of 5

Friday, June 6, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 73.4°F
Average Humidity: 91%
Chance of Rain: 89%
Wind: 7.4 mph
UV Index: 0.9

Air Quality

AQI: 2 - Moderate
PM2.5: 19.86 μg/m3
PM10: 20.89 μg/m3
Carbon Monoxide: 413.88 μg/m3
Nitrogen Dioxide: 28.29 μg/m3
Sulphur Dioxide: 5.51 μg/m3
Ozone: 78.12 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 48 mins
Moonrise: 4:21 PM
Moon Transit: 9:45 PM
Moonset: 2:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

8:53 AM - 11:23 AM
9:15 PM - 11:45 PM

Minor Periods

3:51 PM - 5:21 PM
2:10 AM - 3:40 AM

Action Rating: 2 out of 5

Saturday, June 7, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 71.5°F
Average Humidity: 89%
Chance of Rain: 76%
Wind: 9.6 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 24.92 μg/m3
PM10: 26 μg/m3
Carbon Monoxide: 423.28 μg/m3
Nitrogen Dioxide: 22.17 μg/m3
Sulphur Dioxide: 3.69 μg/m3
Ozone: 85.24 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 49 mins
Moonrise: 5:21 PM
Moon Transit: 10:28 PM
Moonset: 3:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

9:35 AM - 12:05 AM
12:00 AM - 12:00 AM

Minor Periods

4:51 PM - 6:21 PM
2:32 AM - 4:02 AM

Action Rating: 2 out of 5

Sunday, June 8, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 71°F
Average Humidity: 71%
Chance of Rain: 87%
Wind: 15.7 mph
UV Index: 2.2

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 48.01 μg/m3
PM10: 48.84 μg/m3
Carbon Monoxide: 777.43 μg/m3
Nitrogen Dioxide: 67.53 μg/m3
Sulphur Dioxide: 6.66 μg/m3
Ozone: 55.38 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:00 PM
Sunset: 8:25 PM
Daylight: 14 hrs 50 mins
Moonrise: 6:23 PM
Moon Transit: 11:13 PM
Moonset: 3:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

10:19 AM - 12:49 AM
12:00 AM - 12:00 AM

Minor Periods

5:53 PM - 7:23 PM
2:58 AM - 4:28 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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