National Weather Service

News Headlines

This week is Severe Weather Preparedness Week in Illinois! Click here for more details and safety info!
February 2026 and Meteorological Winter 2025-26 Climate Summaries
Spring Seminars and Virtual Spotter Training: Click Here for More Information!
Spring Flood Outlook: Below average to near average flood risk for area river basins

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog

38°F

3°C

Humidity	100%
Wind Speed	NE 3 mph
Barometer	29.97 in (1015.8 mb)
Dewpoint	38°F (3°C)
Visibility	0.15 mi
Last update	5 Mar 5:51 am CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SW Antioch IL

Dense Fog Advisory March 5, 06:05am until March 5, 03:00pm

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory March 5, 06:05am until March 5, 03:00pm
NOW until 3:00pm Thu
Dense Fog Advisory
Today
High: 45 °F
Patchy
Drizzle and
Dense Fog
Tonight
Low: 39 °F
Fog
Friday
High: 68 °F
Showers and
Fog then
Slight Chance
T-storms and
Patchy Fog
Friday Night
Low: 53 °F
Chance
T-storms then
Showers
Saturday
High: 58 °F
Breezy.
Slight Chance
Showers then
Partly Sunny
Saturday Night
Low: 34 °F
Mostly Clear
Sunday
High: 60 °F
Sunny then
Sunny and
Breezy
Sunday Night
Low: 46 °F
Mostly Clear

Detailed Forecast

Today

Patchy drizzle before 1pm. Widespread dense fog, mainly before 3pm. Otherwise, cloudy, with a high near 45. North northeast wind 5 to 10 mph.

Tonight

Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph becoming southeast after midnight. Winds could gust as high as 10 mph.

Friday

A chance of showers before 9am, then showers and possibly a thunderstorm between 9am and noon, then a slight chance of showers and thunderstorms after noon. Widespread fog, mainly before 9am. High near 68. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 53. South southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

Saturday

A 20 percent chance of showers before 9am. Partly sunny, with a high near 58. Breezy, with a southwest wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

Saturday Night

Mostly clear, with a low around 34.

Sunday

Sunny, with a high near 60. Breezy.

Sunday Night

Mostly clear, with a low around 46.

Monday

Sunny, with a high near 69.

Monday Night

Partly cloudy, with a low around 46.

Tuesday

Showers likely. Partly sunny, with a high near 63.