Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56° N Lon: 90.15° W Elev: 410 ft.

Fair

66°F

19°C

Humidity 43%
Wind Speed Calm
Barometer 30.31 in (1026.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 19 Oct 5:53 pm CDT
Detailed forecast for

St. Clair County

Tonight
Partly cloudy. Lows in the mid 40s. East winds around 5 mph.
Tuesday
Sunny. Highs in the lower 70s. East winds around 5 mph.
Tuesday Night
Clear. Lows in the mid 40s. East winds around 5 mph.
Wednesday
Sunny. Highs in the mid 70s. Light and variable winds.
Wednesday Night
Clear. Lows in the mid 40s. Light and variable winds.
Thursday Through Friday
Clear. Highs in the mid 70s. Lows in the upper 40s.
Friday Night
Mostly clear. Lows in the upper 40s.
Saturday And Saturday Night
Partly cloudy. Highs in the mid 70s. Lows in the lower 50s.
Sunday
Partly sunny. Highs in the upper 70s.
Sunday Night And Monday
Partly cloudy. Lows in the lower 50s. Highs in the mid 70s.



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629 PM CDT Mon Oct 19 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database