Active AlertsHighland Park, IL

What: Visibility of one quarter mile or less in dense fog occurring.
Where: Lake IL, Central Cook, and Northern Cook Counties.
When: Until 6 AM CST Friday.
Impacts: Low visibility could make driving conditions hazardous.
Additional Details: The densest fog is currently occurring near the Lake Michigan shore, but is expected to gradually expand inland overnight.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.