Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

77°F

25°C

Humidity 42%
Wind Speed E 13 mph
Barometer 30.31 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 2 Aug 11:50 am CDT
Extended Forecast for

East Alton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. Northeast wind around 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Northeast wind 3 to 7 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Northeast wind 5 to 8 mph.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. Northeast wind around 10 mph.
Tonight
Partly cloudy, with a low around 59. Northeast wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 81. Northeast wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 64. Northeast wind around 6 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
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 89.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
East Alton IL
 38.88°N 90.11°W (Elev. 436 ft)
12:01 pm CDT Aug 2, 2025
12pm CDT Aug 2, 2025-6pm CDT Aug 8, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database