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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

75°F

24°C

Humidity 79%
Wind Speed S 3 mph
Barometer 30.06 in (1016.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Aug 7:51 am CDT
Extended Forecast for

Earth City MO

  • Today

    Today: Sunny, with a high near 91. Light southeast wind.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Southeast wind 3 to 6 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. South wind 3 to 6 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 73. South wind 5 to 7 mph becoming southwest after midnight.  Chance of precipitation is 70%.

    Low: 73 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm.  Partly sunny, with a high near 88. South wind around 5 mph becoming southwest in the morning.  Chance of precipitation is 70%.

    High: 88 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 91. Light southeast wind.
Tonight
Mostly clear, with a low around 71. Southeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 92. South wind 3 to 6 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. South wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 88. South wind around 5 mph becoming southwest in the morning. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 76.
Monday
Mostly sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Earth City MO
 38.76°N 90.48°W (Elev. 430 ft)
5:21 am CDT Aug 4, 2026
8am 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