Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
A Few Clouds
57°F
14°C
| Humidity | 94% |
| Wind Speed | Vrbl 3 mph |
| Barometer | 30.16 in |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 3 Aug 6:50 am CDT |
Extended Forecast for
Alton ILSimilar City Names
Today
High: 81 °F
Mostly Sunny
Tonight
Low: 65 °F
Mostly Cloudy
Monday
High: 81 °F
Partly Sunny
then Slight
Chance
T-stormsMonday Night
Low: 67 °F
Partly Cloudy
Tuesday
High: 83 °F
Mostly Sunny
then Slight
Chance
T-stormsTuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 86 °F
Mostly Sunny
Wednesday Night
Low: 69 °F
Mostly Clear
Thursday
High: 88 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 81. Northeast wind 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 65. Northeast wind 3 to 6 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. East wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 67. East wind around 6 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 86.
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 73.
Saturday
Sunny, with a high near 92.
Additional Forecasts and Information
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Point Forecast:
Alton ILSimilar City Names
38.91°N 90.16°W (Elev. 505 ft)
38.91°N 90.16°W (Elev. 505 ft)
5:26 am CDT Aug 3, 2025
6am CDT Aug 3, 2025-6pm CDT Aug 9, 2025
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