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

49°F

9°C

Humidity 80%
Wind Speed Calm
Barometer 30.09 in (1019.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 30 Apr 7:53 am CDT
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Today

    Today: Sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. Light and variable wind becoming northwest around 6 mph after midnight.

    Low: 45 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 62. North wind 6 to 10 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. North wind around 6 mph becoming calm in the evening.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. Light north wind increasing to 5 to 10 mph in the morning.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 55.

    Low: 55 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon.
Tonight
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. Light and variable wind becoming northwest around 6 mph after midnight.
Friday
Sunny, with a high near 62. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 42. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 62. Light north wind increasing to 5 to 10 mph in the morning.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 72.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 55.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 76. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 71.
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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:
8:01 am CDT Apr 30, 2026
Forecast Valid:
8am CDT Apr 30, 2026-6pm CDT May 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation