National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

46°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in (1024.0 mb)
Dewpoint 46°F (8°C)
Visibility 2.50 mi
Last update 24 Dec 2:53 am CST
Extended Forecast for

2 Miles SSE Belleville IL

Dense Fog Advisory December 24, 03:07am until December 24, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 24, 03:07am until December 24, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 47 °F

    Dense Fog

  • Wednesday

    Wednesday: Patchy drizzle between 7am and noon. Areas of dense fog before 1pm. Otherwise, cloudy, with a high near 64. East wind 5 to 8 mph becoming south in the afternoon.

    High: 64 °F

    Patchy
    Drizzle and
    Areas Dense
    Fog then
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Patchy fog before 1am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming light and variable after midnight.

    Low: 55 °F

    Patchy Fog

  • Christmas Day

    Christmas Day: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. East wind around 7 mph becoming south after midnight.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

Detailed Forecast

Overnight
Widespread dense fog, mainly before 5am. Otherwise, cloudy, with a low around 47. Northeast wind 3 to 5 mph.
Wednesday
Patchy drizzle between 7am and noon. Areas of dense fog before 1pm. Otherwise, cloudy, with a high near 64. East wind 5 to 8 mph becoming south in the afternoon.
Wednesday Night
Patchy fog before 1am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming light and variable after midnight.
Christmas Day
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. Light and variable wind becoming east around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 58. East wind around 7 mph becoming south after midnight.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Belleville IL
 38.5°N 89.98°W (Elev. 495 ft)
Last Update:
2:46 am CST Dec 24, 2025
Forecast Valid:
3am CST Dec 24, 2025-6pm CST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation