Anyone doing last-minute Christmas shopping late Saturday night -- or planning to venture out early Christmas Eve morning -- might want to leave a little earlier than planned.
According to the National Weather Service, widespread dense fog is expected, with visibilities under a quarter of a mile at times. Fog will likely subside through Sunday morning, but until then, drivers could encounter potentially hazardous conditions.
With sharply reduced visibility expected, the NWS advises that drivers slow down, increase their stopping distance and use their low beams. The fog will later give way to cloudy and unseasonably mild conditions for the remainder of Christmas Eve, according to forecasters.
Feeling out of the loop? We'll catch you up on the Chicago news you need to know. Sign up for the weekly Chicago Catch-Up newsletter.