Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
66°F
19°C
| Humidity | 34% |
| Wind Speed | SE 6 mph |
| Barometer | 30.37 in (1028.6 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 3:53 pm CDT |
Extended Forecast for
Cahokia / St. Louis, St. Louis Downtown Airport IL
Tonight
Low: 38 °F
Clear then
Patchy FogMonday
High: 72 °F
Patchy Fog
then SunnyMonday Night
Low: 40 °F
Partly Cloudy
Tuesday
High: 74 °F
Mostly Sunny
Tuesday Night
Low: 43 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Wednesday Night
Low: 44 °F
Clear
Thursday
High: 77 °F
Sunny
Thursday Night
Low: 47 °F
Clear
Detailed Forecast
Tonight
Patchy fog after 4am. Otherwise, clear, with a low around 38. Southeast wind 5 to 7 mph becoming calm in the evening.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 72. Calm wind.
Monday Night
Partly cloudy, with a low around 40. Calm wind.
Tuesday
Mostly sunny, with a high near 74. Calm wind.
Tuesday Night
Mostly clear, with a low around 43. Calm wind.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Clear, with a low around 44.
Thursday
Sunny, with a high near 77.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Cahokia / St. Louis, St. Louis Downtown Airport IL
38.57°N 90.15°W (Elev. 407 ft)
38.57°N 90.15°W (Elev. 407 ft)
2:56 pm CDT Oct 18, 2026
4pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
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