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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

50°F

10°C

Humidity 83%
Wind Speed W 5 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 6 May 8:53 am CDT
Extended Forecast for

Cahokia / St. Louis, St. Louis Downtown Airport IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 61. North wind 5 to 9 mph.

    High: 61 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 42. North wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. Calm wind becoming south around 6 mph after midnight.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76. South wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Partly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    T-storms

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 61. North wind 5 to 9 mph.
Tonight
Mostly clear, with a low around 42. North wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 66. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 46. Calm wind becoming south around 6 mph after midnight.
Friday
Mostly sunny, with a high near 76. South wind 7 to 13 mph, with gusts as high as 21 mph.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Partly cloudy, with a low around 51. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 82.
Saturday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 74.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia / St. Louis, St. Louis Downtown Airport IL
 38.57°N 90.15°W (Elev. 407 ft)
Last Update:
7:35 am CDT May 6, 2026
Forecast Valid:
9am CDT May 6, 2026-6pm CDT May 12, 2026
 
Forecast Discussion
 
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