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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog

39°F

4°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.97 in (1015.8 mb)
Dewpoint 39°F (4°C)
Visibility 0.15 mi
Last update 6 Mar 6:51 am CST
Extended Forecast for

Zion IL

Dense Fog Advisory March 6, 07:21am until March 6, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory March 6, 07:21am 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:
4:31 am CST Mar 6, 2026
Forecast Valid:
7am CST Mar 6, 2026-6pm CDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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