A dense fog advisory is in effect throughout the Chicago area, with visibility expected to be strongly impacted through Thursday morning.
According to the National Weather Service, the advisory is already in effect in LaSalle, Kendall, Grundy, Will and Kankakee counties in Illinois, as well as Lake, Porter, Newton, and Jasper counties in Indiana.
The advisory went into effect at 6 p.m. in McHenry, Lake, Kane, DuPage and Cook counties.
The advisory will expire Thursday morning across the area, but patchy fog is still possible even after it expires, according to officials.
The alert says that the dense fog could reduce visibility to less than one-quarter of a mile, making for hazardous driving conditions on area roadways.
Local
Motorists are urged to allow for extra travel time, to reduce their speed and to increase their following distance.
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.
