Current conditions at

St. Louis Downtown Airport (KCPS)

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

Fair

76°F

24°C

Humidity 29%
Wind Speed NE 3 mph
Barometer 30.20 in (1022.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 5 Oct 2:53 pm CDT
Detailed forecast for

St. Clair County

Tonight
Clear. Lows in the upper 40s. East winds around 5 mph.
Tuesday
Sunny. Highs in the lower 80s. South winds 5 to 10 mph.
Tuesday Night
Clear. Lows in the mid 50s. South winds around 5 mph.
Wednesday
Sunny. Highs in the upper 80s. West winds 5 to 10 mph.
Wednesday Night
Clear. Lows in the upper 50s. Northwest winds around 5 mph, becoming north after midnight.
Thursday Through Saturday
Mostly clear. Highs in the mid 80s. Lows in the mid 50s.
Saturday Night
Mostly clear. Lows in the upper 50s.
Sunday And Sunday Night
Partly cloudy. Highs in the mid 80s. Lows around 60.
Columbus Day
Mostly sunny with a 20 percent chance of showers. Highs in the lower 80s.



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308 PM CDT Mon Oct 5 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database