Illinois, Indiana Dense Fog Advisory | Effective 04/16/2026 18:07

Headline: 
Dense Fog Advisory issued April 16 at 8:07PM CDT until April 17 at 10:00AM CDT by NWS Chicago IL
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
April 16, 2026 - 6:07pm
Expires: 
April 17, 2026 - 4:15am
Description: 
* WHAT...Visibility one quarter mile or less in dense fog expected. * WHERE...In Illinois, Southern Cook County. In Indiana, Lake IN County. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Dense fog will continue spreading across the impacted counties this evening.
Instruction: 
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Area Description: 
Southern Cook; Lake
Forcast Office: 
NWS Chicago IL