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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Freezing Fog

31°F

-1°C

Humidity 100%
Wind Speed Calm
Barometer 30.22 in (1024.6 mb)
Dewpoint 31°F (-1°C)
Visibility 0.15 mi
Last update 4 Mar 7:51 am CST
Extended Forecast for

Waukegan IL

Dense Fog Advisory March 4, 08:44am until March 4, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory March 4, 08:44am until March 4, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Today

    High: 40 °F

    Areas Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of showers or drizzle between 10pm and midnight, then showers likely after midnight. Patchy fog after 9pm. Otherwise, cloudy, with a low around 38. Northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm before noon, then a chance of showers. Areas of dense fog. High near 42. North northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 42 °F

    Showers and
    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: Areas of fog. Otherwise, cloudy, with a low around 40. North northeast wind around 5 mph becoming southeast after midnight.

    Low: 40 °F

    Areas Fog

  • Friday

    Friday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 3pm. High near 63. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 63 °F

    Showers and
    Areas Fog

  • Friday Night

    Friday Night: A slight chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Partly sunny, with a high near 57.

    High: 57 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Today
Areas of dense fog before 10am. Otherwise, mostly cloudy, with a high near 40. East wind 5 to 10 mph.
Tonight
A slight chance of showers or drizzle between 10pm and midnight, then showers likely after midnight. Patchy fog after 9pm. Otherwise, cloudy, with a low around 38. Northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers and possibly a thunderstorm before noon, then a chance of showers. Areas of dense fog. High near 42. North northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Areas of fog. Otherwise, cloudy, with a low around 40. North northeast wind around 5 mph becoming southeast after midnight.
Friday
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 3pm. High near 63. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Friday Night
A slight chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 50. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Partly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Showers likely. Partly sunny, with a high near 68. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.88°W
Last Update:
6:56 am CST Mar 4, 2026
Forecast Valid:
8am CST Mar 4, 2026-6pm CDT Mar 10, 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