Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
75°F
24°C
| Humidity | 47% |
| Wind Speed | NE 10 mph |
| Barometer | 30.20 in |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 2 Aug 6:50 pm CDT |
Extended Forecast for
Alton IL
Tonight
Low: 56 °F
Partly Cloudy
Sunday
High: 81 °F
Mostly Sunny
Sunday Night
Low: 64 °F
Partly Cloudy
Monday
High: 81 °F
Partly Sunny
then Slight
Chance
T-stormsMonday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 84 °F
Mostly Sunny
then Slight
Chance
T-stormsTuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 87 °F
Sunny
Wednesday Night
Low: 69 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 56. Northeast wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 81. Northeast wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 64. Northeast wind around 6 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 71.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 91.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Alton IL
38.91°N 90.13°W (Elev. 499 ft)
38.91°N 90.13°W (Elev. 499 ft)
5:51 pm CDT Aug 2, 2025
7pm CDT Aug 2, 2025-6pm CDT Aug 9, 2025
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