Illinois Dense Fog Advisory | Effective 04/16/2026 23:55

Headline: 
Dense Fog Advisory issued April 17 at 1:55AM CDT until April 17 at 10:00AM CDT by NWS Chicago IL
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
April 16, 2026 - 11:55pm
Expires: 
April 17, 2026 - 8:00am
Description: 
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Boone, DuPage, Kane, and Kendall Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Instruction: 
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Area Description: 
Boone; Kane; DuPage; Kendall
Forcast Office: 
NWS Chicago IL