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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog

37°F

3°C

Humidity 100%
Wind Speed E 5 mph
Barometer 30.00 in (1016.7 mb)
Dewpoint 37°F (3°C)
Visibility 0.50 mi
Wind Chill33°F (1°C)
Last update 6 Mar 3:51 am CST
Extended Forecast for

Zion IL

Dense Fog Advisory March 6, 04:24am until March 6, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory March 6, 04:24am until March 6, 10:00am

    NOW until 10:00am Fri

    Dense Fog Advisory

  • Today

    High: 66 °F

    T-storms and
    Dense Fog

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before noon. Mostly cloudy, with a temperature falling to around 46 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F⇓

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 58. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Today
Showers and thunderstorms, mainly before 2pm. Widespread dense fog, mainly before noon. High near 66. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of showers and thunderstorms before noon. Mostly cloudy, with a temperature falling to around 46 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 36. West wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Showers likely after noon. Partly sunny, with a high near 54.
Tuesday Night
Showers. Mostly cloudy, with a low around 37.
Wednesday
A chance of showers. Mostly cloudy, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
4:16 am CST Mar 6, 2026
Forecast Valid:
4am CST Mar 6, 2026-6pm CDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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