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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

86°F

30°C

Humidity 94%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 84°F (29°C)
Visibility 10.00 mi
Heat Index108°F (42°C)
Last update 30 Jul 8:53 am CDT
Extended Forecast for

3 Miles WNW Belleville IL

Extreme Heat Warning July 30, 09:34am until July 30, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 09:34am until July 30, 07:00pm

    NOW until 7:00pm Wed

    Extreme Heat Warning

  • Today

    High: 95 °F

    Sunny then
    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. Light northeast wind. Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 66. North wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 80. Northeast wind 8 to 11 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Today
Scattered showers and thunderstorms, mainly after 4pm. Sunny, with a high near 95. Heat index values as high as 105. Calm wind becoming southeast around 5 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. Light northeast wind. Chance of precipitation is 50%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 66. North wind 8 to 10 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 80. Northeast wind 8 to 11 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Belleville IL
 38.55°N 90.06°W (Elev. 568 ft)
Last Update:
8:31 am CDT Jul 30, 2025
Forecast Valid:
9am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
 
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