Chicago, IL – Dense fog blanketed parts of northeast Illinois and northwest Indiana Friday morning, leading to hazardous driving conditions for commuters. The National Weather Service (NWS) in Chicago warned that some areas have become “locally dense,” reducing visibility to less than a quarter mile.
According to the NWS, the fog developed early September 12 and is expected to linger through 10 a.m. CDT, especially in low-lying areas and river valleys outside of Chicago. The most affected locations include communities near Aurora, Joliet, Ottawa, and Gary, with patchy but potentially dangerous fog reported across surrounding counties.
Officials cautioned that sudden changes in visibility may occur without warning, particularly on highways and rural roads. Drivers are advised to reduce speeds, increase following distance, and use low-beam headlights.
The advisory stresses that the fog may lift more quickly in some spots but could remain dense in others, creating uneven driving conditions. While the Chicago metro itself may see lighter coverage, travelers heading west and south into the suburbs should be prepared for delays.
Morning commuters across the Chicago region, northeast Illinois, and northwest Indiana are urged to allow extra travel time and stay alert for rapidly shifting visibility.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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