Motorists in the western suburbs are advised to exercise extra caution when driving Thursday night due to a fog warning in several northern Illinois counties.
According to the National Weather Service, the recommendation now applies to DeKalb, LaSalle, Kendall, and Grundy counties and will remain in effect until 4 a.m.
Outside of NBC 5’s field of view, Lee, Ogle, Livingston, and Ford counties are also affected by the recommendation.
The consultation originally ended at midnight but was extended to 4 a.m. in the affected area.
The NWS also added southern Will County and all of Kankakee County to the advisory.
At this time (6:47 pm) the Dense Fog Advisory is in effect for Counties Ogle, Lee, DeKalb, Kendall, Grundy, LaSalle, Livingston and Ford. A further expansion to the east cannot be ruled out. Stay tuned for updates. #ilwx
– NWS Chicago (@NWChicago) January 14, 2022
According to forecasters, visibility will be reduced to a quarter of a mile or less in the affected areas. Falling temperatures could also cause problems as, according to NWS, blotchy, slippery spots could develop on the streets when temperatures drop below freezing.
Forecasters are calling on motorists to use their dipped headlights, drive slower than normal and increase the following distances in the affected districts.