Weather for Alton, Illinois
Current Weather
Humidity: 55%
Feels Like: 63.1°F
Wind: NE 3.8 mph
Wind Gusts: 7.8 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Fri
H: 75°F
L: 48°F
Sat
H: 77°F
L: 47°F
Sun
H: 82°F
L: 55°F
Mon
H: 77°F
L: 62°F
Tue
H: 78°F
L: 58°F
Air Quality
Nitrogen Dioxide: 57.72 μg/m3
Sulphur Dioxide: 3.7 μg/m3
Ozone: 44 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:01 PM
Daylight: 14 hrs 8 mins
Moon Transit: 11:06 PM
Moonset: 4:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
10:15 AM - 12:45 AM12:00 AM - 12:00 AM
Minor Periods
4:58 PM - 6:28 PM3:45 AM - 5:15 AM
Action Rating: 2 out of 5
Flood Warning issued May 9 at 11:39AM CDT until May 13 at 4:00PM CDT by NWS St Louis MO
Effective: Fri May 9, 2025, 11:39 AM
Expires: Sat May 10, 2025, 11:45 PM
...The Flood Warning is extended for the following river in Illinois... Kaskaskia River at Carlyle. 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...Kaskaskia River at Carlyle. * WHEN...Until Tuesday afternoon. * ADDITIONAL DETAILS... - At 11:00 AM CDT Friday the stage was 18.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:00 AM CDT Friday was 18.7 feet. - Forecast...The river is expected to fall below flood stage late Monday morning and continue falling to 13.3 feet Friday, May 16. - Flood stage is 16.5 feet.
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 9 at 11:39AM CDT until May 13 at 4:00PM CDT by NWS St Louis MO
Effective: Fri May 9, 2025, 11:39 AM
Expires: Sat May 10, 2025, 11:45 PM
...The Flood Warning is extended for the following river in Illinois... Kaskaskia River at Carlyle. 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...Kaskaskia River at Carlyle. * WHEN...Until Tuesday afternoon. * ADDITIONAL DETAILS... - At 11:00 AM CDT Friday the stage was 18.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:00 AM CDT Friday was 18.7 feet. - Forecast...The river is expected to fall below flood stage late Monday morning and continue falling to 13.3 feet Friday, May 16. - Flood stage is 16.5 feet.
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Weather Forecast
Average Temperature: 61.5°F
Average Humidity: 67%
Wind: 10.5 mph
UV Index: 2.1
Air Quality
Nitrogen Dioxide: 12.74 μg/m3
Sulphur Dioxide: 3.69 μg/m3
Ozone: 83.96 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:01 PM
Daylight: 14 hrs 8 mins
Moon Transit: 11:06 PM
Moonset: 4:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
10:15 AM - 12:45 AM12:00 AM - 12:00 AM
Minor Periods
4:58 PM - 6:28 PM3:45 AM - 5:15 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 63.3°F
Average Humidity: 61%
Wind: 7.6 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 34.44 μg/m3
Sulphur Dioxide: 5.71 μg/m3
Ozone: 85.48 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:02 PM
Daylight: 14 hrs 10 mins
Moon Transit: 11:47 PM
Moonset: 4:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%
Best Times for Fishing or Hunting
Major Periods
10:55 AM - 1:25 PM12:00 AM - 12:00 AM
Minor Periods
5:59 PM - 7:29 PM4:06 AM - 5:36 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 69°F
Average Humidity: 65%
Wind: 9.8 mph
UV Index: 2.2
Air Quality
Nitrogen Dioxide: 37.93 μg/m3
Sulphur Dioxide: 6.24 μg/m3
Ozone: 87 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:03 PM
Daylight: 14 hrs 12 mins
Moon Transit: 12:00 AM
Moonset: 4:59 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:37 AM - 2:07 PM
Minor Periods
6:59 PM - 8:29 PM4:29 AM - 5:59 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 67.8°F
Average Humidity: 80%
Wind: 7.2 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 14.96 μg/m3
Sulphur Dioxide: 8.59 μg/m3
Ozone: 83.12 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:04 PM
Daylight: 14 hrs 13 mins
Moon Transit: 12:31 AM
Moonset: 5:26 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:01 AM - 2:31 AM12:22 AM - 2:52 PM
Minor Periods
8:02 PM - 9:32 PM4:56 AM - 6:26 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 68.2°F
Average Humidity: 78%
Wind: 4.9 mph
UV Index: 2.1
Air Quality
Nitrogen Dioxide: 30.84 μg/m3
Sulphur Dioxide: 4.47 μg/m3
Ozone: 52 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:05 PM
Daylight: 14 hrs 15 mins
Moon Transit: 1:17 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 97.2%
Best Times for Fishing or Hunting
Major Periods
12:47 AM - 3:17 AM1:10 PM - 3:40 PM
Minor Periods
9:04 PM - 10:34 PM5:28 AM - 6:58 AM
Action Rating: 4 out of 5