Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

86°F

30°C

Humidity 53%
Wind Speed SE 3 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 4 Aug 12:53 pm CDT
Extended Forecast for

3 Miles NW Maeystown IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. Calm wind becoming southeast around 5 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. Southeast wind 3 to 5 mph.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. South wind 3 to 8 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 3am.  Increasing clouds, with a low around 70. Southeast wind 3 to 7 mph.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm.  High near 84. Light and variable wind becoming south around 5 mph.  Chance of precipitation is 80%.

    High: 84 °F

    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85.

    High: 85 °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 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Calm wind becoming southeast around 5 mph.
Tonight
Mostly clear, with a low around 67. Southeast wind 3 to 5 mph.
Wednesday
Sunny, with a high near 90. South wind 3 to 8 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. Southeast wind 3 to 7 mph.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 84. Light and variable wind becoming south around 5 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Friday Night
A 40 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 74.
Monday
Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Maeystown IL
 38.26°N 90.25°W (Elev. 656 ft)
1:26 pm CDT Aug 4, 2026
1pm CDT Aug 4, 2026-6pm CDT Aug 10, 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