Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

45°F

7°C

Humidity 93%
Wind Speed S 6 mph
Barometer 30.17 in
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill42°F (6°C)
Last update 23 Nov 5:50 pm CST
Extended Forecast for

Troy ILSimilar City Names

Dense Fog Advisory November 23, 06:00pm until November 24, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  • Tonight

    Tonight: Widespread dense fog, mainly after 2am.  Otherwise, cloudy, with a low around 43. South wind 3 to 6 mph.

    Low: 43 °F

    Dense Fog

  • Monday

    Monday: Rain likely, mainly after 4pm.  Widespread dense fog, mainly before 7am.  Otherwise, cloudy, with a high near 58. Southeast wind 6 to 9 mph.  Chance of precipitation is 60%.

    High: 58 °F

    Dense Fog
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain.  Patchy fog between 7pm and 1am. Low around 50. Southeast wind 5 to 8 mph becoming calm  after midnight.  Chance of precipitation is 90%.

    Low: 50 °F

    Rain and
    Patchy Fog
    then Rain
    Likely and
    Areas Fog

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon.  Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 8 mph in the morning.

    High: 61 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. West wind 6 to 16 mph, with gusts as high as 24 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. Breezy.

    High: 45 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Widespread dense fog, mainly after 2am. Otherwise, cloudy, with a low around 43. South wind 3 to 6 mph.
Monday
Rain likely, mainly after 4pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, with a high near 58. Southeast wind 6 to 9 mph. Chance of precipitation is 60%.
Monday Night
Rain. Patchy fog between 7pm and 1am. Low around 50. Southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 90%.
Tuesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 8 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 36. West wind 6 to 16 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 45. Breezy.
Wednesday Night
Partly cloudy, with a low around 27.
Thanksgiving Day
Sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 43.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.
Saturday Night
Rain likely. Cloudy, with a low around 36. Chance of precipitation is 60%.
Sunday
Rain likely. Mostly cloudy, with a high near 50. Chance of precipitation is 60%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Troy ILSimilar City Names
 38.72°N 89.89°W (Elev. 551 ft)
5:46 pm CST Nov 23, 2025
5pm CST Nov 23, 2025-6pm CST Nov 30, 2025
 
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