Dense Fog Advisory

7:20pm Update: Dense Fog Advisory canceled for Winnebago, Boone, McHenry, Ogle, Lee and DeKalb counties.




A Dense Fog Advisory has been issued for most of northern Illinois and southwest Wisconsin through 10pm Wednesday evening.


Very dense fog during the afternoon Wednesday caused visibility to drop below a quarter of a mile in many locations.  There has been some improvement in the visibility, especially over Rockford and Rochelle, within the past hour as temperatures continue to warm.

Fog will still be present during the overnight, but visibility should continue to improve.