National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

89°F

32°C

Humidity 18%
Wind Speed W 9 mph
Barometer 29.81 in (1009.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 20 Mar 4:53 pm CDT
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 50. West wind 5 to 7 mph becoming light and variable after midnight.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. South wind 6 to 9 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85. South wind 9 to 14 mph becoming west in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. North wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. West wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 82. Light and variable wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 61. South wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 85. South wind 9 to 14 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 40. North wind 13 to 16 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 42.
Wednesday
Mostly cloudy, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 49.
Thursday
A 20 percent chance of rain. Sunny, with a high near 77.
Thursday Night
A 40 percent chance of rain. Partly cloudy, with a low around 42.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.84°W (Elev. 417 ft)
Last Update:
1:56 pm CDT Mar 20, 2026
Forecast Valid:
5pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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Chance of Precipitation