Water Temperature of the Mississippi River in Alton, IL
Current Water Temperature
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 ParkStation 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

Five Day Weather Forecast

Mon
H: 83°F
L: 56°F

Tue
H: 75°F
L: 59°F

Wed
H: 91°F
L: 60°F

Thu
H: 70°F
L: 61°F

Fri
H: 77°F
L: 57°F
Air Quality
Nitrogen Dioxide: 1.1 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 107 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:28 PM
Daylight: 14 hrs 53 mins
Moon Transit: 1:42 PM
Moonset: 9:41 PM
Moon Phase: New
Moon Illumination: 3.8%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 AM1:12 PM - 3:42 PM
Minor Periods
9:11 PM - 10:41 PM5:10 AM - 6:40 AM
Action Rating: 4 out of 5
Flood Warning issued June 14 at 8:10PM CDT by NWS St Louis MO
Effective: Sun June 14, 2026, 8:10 PM
Expires: Tue June 16, 2026, 8:15 AM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Hardin. Illinois River at Valley City. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...From Monday afternoon until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 24.6 feet. - Forecast...The river is expected to rise above flood stage early tomorrow afternoon and continue rising to a crest of 26.2 feet Thursday evening. - Flood stage is 25.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 14 at 8:14PM CDT until June 20 at 7:00AM CDT by NWS St Louis MO
Effective: Sun June 14, 2026, 8:14 PM
Expires: Tue June 16, 2026, 8:15 AM
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Chester. Mississippi River at Saverton. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From Monday evening to Saturday morning. * IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet of polyethylene plastic as a precaution. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 25.5 feet. - Forecast...The river is expected to rise above flood stage tomorrow evening to a crest of 26.8 feet early Wednesday afternoon. It will then fall below flood stage early Friday morning. - Flood stage is 26.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 14 at 8:14PM CDT until June 20 at 3:00AM CDT by NWS St Louis MO
Effective: Sun June 14, 2026, 8:14 PM
Expires: Tue June 16, 2026, 8:15 AM
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Chester. Mississippi River at Saverton. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Clarksville. * WHEN...Until late Friday night. * IMPACTS...At 27.2 feet, Silo Park just northwest of Clarksville off Highway 79 begins flooding. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 25.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 PM CDT Sunday was 25.9 feet. - Forecast...The river is expected to rise to a crest of 26.9 feet Tuesday evening. It will then fall below flood stage late Thursday evening. - Flood stage is 25.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.04 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 64.88 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:28 PM
Daylight: 14 hrs 53 mins
Moon Transit: 1:42 PM
Moonset: 9:41 PM
Moon Phase: New
Moon Illumination: 3.8%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 AM1:12 PM - 3:42 PM
Minor Periods
9:11 PM - 10:41 PM5:10 AM - 6:40 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.54 μg/m3
Sulphur Dioxide: 2.52 μg/m3
Ozone: 77.63 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:28 PM
Daylight: 14 hrs 54 mins
Moon Transit: 2:48 PM
Moonset: 10:32 PM
Moon Phase: New
Moon Illumination: 1.0%
Best Times for Fishing or Hunting
Major Periods
1:44 AM - 4:14 AM2:18 PM - 4:48 PM
Minor Periods
10:02 PM - 11:32 PM6:25 AM - 7:55 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.48 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 65.13 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:29 PM
Daylight: 14 hrs 54 mins
Moon Transit: 3:48 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%
Best Times for Fishing or Hunting
Major Periods
2:48 AM - 5:18 AM3:18 PM - 5:48 PM
Minor Periods
12:00 AM - 12:00 AM7:44 AM - 9:14 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.29 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 70.88 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:29 PM
Daylight: 14 hrs 54 mins
Moon Transit: 4:43 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%
Best Times for Fishing or Hunting
Major Periods
3:45 AM - 6:15 AM4:13 PM - 6:43 PM
Minor Periods
9:00 AM - 10:30 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 16.81 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 32.38 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:29 PM
Daylight: 14 hrs 54 mins
Moon Transit: 5:33 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%
Best Times for Fishing or Hunting
Major Periods
4:37 AM - 7:07 AM5:03 PM - 7:33 PM
Minor Periods
10:14 AM - 11:44 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
