Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

A Few Clouds

82°F

28°C

Humidity 37%
Wind Speed S 3 mph
Barometer 30.09 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 1 Oct 5:50 pm CDT
Extended Forecast for

East Alton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East wind 3 to 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Southeast wind around 6 mph becoming calm  after midnight.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Light south wind.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. East wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 89. Light and variable wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 65. Southeast wind around 6 mph becoming calm after midnight.
Friday
Sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 62. Light south wind.
Saturday
Sunny, with a high near 88.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 64.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 63.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
East Alton IL
 38.88°N 90.11°W (Elev. 436 ft)
4:16 pm CDT Oct 1, 2025
6pm CDT Oct 1, 2025-6pm CDT Oct 8, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database