Active Weather Alerts
Dense Fog Advisory
Issued: 12:38 PM Oct. 20, 2026 – National Weather Service
...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...Central Cook, DuPage, Lake IL, McHenry, and Northern Cook Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog is mainly confined to northern portions of DuPage and Cook Counties.
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