National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

91°F

33°C

Humidity 64%
Wind Speed NW 8 mph
Barometer 30.02 in (1015.1 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 19 Aug 12:51 pm CDT
Extended Forecast for

2 Miles W Earth City MO

Heat Advisory August 19, 01:17pm until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 01:17pm until August 19, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. North wind 5 to 8 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. North wind 6 to 9 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Northeast wind 5 to 8 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Northeast wind 5 to 9 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Heat index values as high as 106. Northwest wind around 7 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. North wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 87. North wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 66. Northeast wind 5 to 8 mph.
Thursday
Sunny, with a high near 85. Northeast wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 60.
Monday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Earth City MO
 38.78°N 90.48°W (Elev. 440 ft)
Last Update:
12:01 pm CDT Aug 19, 2025
Forecast Valid:
1pm CDT Aug 19, 2025-6pm CDT Aug 25, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation