Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

71°F

22°C

Humidity 32%
Wind Speed S 12 G 26 mph
Barometer 30.04 in (1017.0 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 29 Mar 5:53 pm CDT
Extended Forecast for

2 Miles SE Cahokia IL

Red Flag Warning until March 29, 07:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning until March 29, 07:00pm

    NOW until 7:00pm Sun

    Red Flag Warning

  • Tonight

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 84. Southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain and thunderstorms after 1pm.  Mostly sunny, with a high near 86. Southwest wind 14 to 18 mph, with gusts as high as 30 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am.  Low around 58. Southwest wind 9 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 80%.

    Low: 58 °F

    Chance Rain
    then Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm.  High near 70. Chance of precipitation is 80%.

    High: 70 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm.  Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Rain

  • Thursday

    Thursday: Rain.  High near 68. Chance of precipitation is 80%.

    High: 68 °F

    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. South wind 9 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 84. Southwest wind 11 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 86. Southwest wind 14 to 18 mph, with gusts as high as 30 mph.
Tuesday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 58. Southwest wind 9 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm. High near 70. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%.
Thursday
Rain. High near 68. Chance of precipitation is 80%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 74.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 57.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Saturday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 62.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
6:01 pm CDT Mar 29, 2026
6pm CDT Mar 29, 2026-6pm CDT Apr 5, 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