Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

73°F

23°C

Humidity 84%
Wind Speed Calm
Barometer 30.02 in (1016.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 8 Aug 3:53 am CDT
Extended Forecast for

East St. Louis IL

Extreme Heat Watch August 9, 12:00pm until August 12, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Today

    Today: Sunny, with a high near 92. Heat index values as high as 102. Light and variable wind.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 73. Light south wind.

    Low: 73 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Heat index values as high as 106. Light south wind increasing to 5 to 10 mph in the morning.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South wind 6 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Southwest wind 6 to 9 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 78.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 94.

    High: 94 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 92. Heat index values as high as 102. Light and variable wind.
Tonight
Clear, with a low around 73. Light south wind.
Sunday
Sunny, with a high near 95. Heat index values as high as 106. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 76. South wind 6 to 10 mph.
Monday
Sunny and hot, with a high near 97. Southwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Mostly sunny and hot, with a high near 97.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 77.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
East St. Louis IL
 38.62°N 90.15°W (Elev. 407 ft)
3:11 am CDT Aug 8, 2026
4am CDT Aug 8, 2026-6pm CDT Aug 14, 2026
 
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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