Active AlertsRoselle, IL

What: Visibility of one quarter mile or less in dense fog expected.
Where: In Illinois, Central Cook, DuPage, Lake IL, Northern Cook, and Southern Cook Counties. In Indiana, Lake IN and Porter Counties.
When: Until 3 PM CST this afternoon.
Impacts: Low visibility could make driving conditions hazardous.

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