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 Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

70°F

21°C

Humidity 89%
Wind Speed E 3 mph
Barometer 30.04 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Aug 12:35 am CDT
Extended Forecast for

3 Miles NNW Pontoon Beach IL

  • Overnight

    Overnight: Clear, with a low around 68. Light and variable wind.

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Light south wind increasing to 5 to 9 mph in the morning.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly after 5am.  Cloudy, then gradually becoming partly cloudy, with a low around 71. Southeast wind 5 to 7 mph becoming light and variable  after midnight.  Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm.  High near 84. Northwest wind around 6 mph becoming south in the morning.  Chance of precipitation is 80%.

    High: 84 °F

    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 68. Light and variable wind.
Wednesday
Sunny, with a high near 90. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Showers and thunderstorms likely, mainly after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 71. Southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 84. Northwest wind around 6 mph becoming south in the morning. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south wind.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Pontoon Beach IL
 38.77°N 90.08°W (Elev. 427 ft)
12:21 am CDT Aug 5, 2026
12am 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