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

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Fog

41°F

5°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.96 in (1015.3 mb)
Dewpoint 41°F (5°C)
Visibility 0.13 mi
Last update 5 Mar 3:53 am CST
Extended Forecast for

Westmont IL

Dense Fog Advisory March 5, 03:59am until March 5, 03:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 03:59am until March 5, 03:00pm

    NOW until 3:00pm Thu

    Dense Fog Advisory

  • Overnight

    Low: 39 °F

    Patchy
    Drizzle and
    Dense Fog

  • Thursday

    Thursday: Patchy showers and thunderstorms before noon, then a slight chance of showers between noon and 2pm. Widespread dense fog, mainly before noon. Otherwise, cloudy, with a high near 44. North wind around 5 mph. Chance of precipitation is 40%.

    High: 44 °F

    Patchy
    Showers and
    Dense Fog

  • Thursday Night

    Thursday Night: Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 42. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 42 °F

    Fog

  • Friday

    Friday: Showers and thunderstorms likely before 3pm, then a slight chance of showers. Areas of fog before noon. Otherwise, mostly cloudy, with a high near 72. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely and
    Areas Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 57 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 60. Breezy.

    High: 60 °F

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

Overnight
Patchy drizzle. Widespread dense fog. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph.
Thursday
Patchy showers and thunderstorms before noon, then a slight chance of showers between noon and 2pm. Widespread dense fog, mainly before noon. Otherwise, cloudy, with a high near 44. North wind around 5 mph. Chance of precipitation is 40%.
Thursday Night
Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 42. Northeast wind around 5 mph becoming southeast after midnight.
Friday
Showers and thunderstorms likely before 3pm, then a slight chance of showers. Areas of fog before noon. Otherwise, mostly cloudy, with a high near 72. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 60. Breezy.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Showers likely. Mostly cloudy, with a high near 67.
Tuesday Night
Showers. Cloudy, with a low around 44.
Wednesday
Rain likely. Mostly cloudy, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westmont IL
 41.8°N 87.97°W
Last Update:
3:45 am CST Mar 5, 2026
Forecast Valid:
3am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation