Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

69°F

21°C

Humidity 93%
Wind Speed S 3 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Aug 3:53 am CDT
Extended Forecast for

4 Miles SW Waterloo IL

  • Today

    Today: Increasing clouds, with a high near 90. South wind 3 to 6 mph.

    High: 90 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am.  Mostly cloudy, with a low around 70. Light and variable wind becoming south around 5 mph.  Chance of precipitation is 60%.

    Low: 70 °F

    Scattered
    T-storms then
    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms before 4pm, then isolated showers and thunderstorms after 5pm.  High near 84. Light and variable wind becoming southwest around 5 mph.  Chance of precipitation is 80%.

    High: 84 °F

    T-storms then
    Scattered
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly after 1am.  Partly cloudy, with a low around 70. Light south wind.  Chance of precipitation is 70%.

    Low: 70 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 85. Southwest wind around 5 mph.  Chance of precipitation is 60%.

    High: 85 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 90. South wind 3 to 6 mph.
Tonight
Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 70. Light and variable wind becoming south around 5 mph. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms before 4pm, then isolated showers and thunderstorms after 5pm. High near 84. Light and variable wind becoming southwest around 5 mph. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms likely, mainly after 1am. Partly cloudy, with a low around 70. Light south wind. Chance of precipitation is 70%.
Friday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 85. Southwest wind around 5 mph. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 93.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
3:41 am CDT Aug 5, 2026
4am CDT Aug 5, 2026-6pm CDT Aug 11, 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