Dense Fog Expected To Affect Chicago Area Monday Morning: Weather Service

Foggy Chicago Skyline

CHICAGO (WBBM NEWSRADIO) -- The National Weather Service issued a dense fog advisory for the Chicago area Monday morning.

The advisory is in effect until 8 a.m. for Cook, Kane, Lee, DuPage, Kendall, Grundy and Will counties in Illinois, the weather service said.

Head's up early morning commuters!DENSE FOG will continue to sunrise & even a little beyond, especially along & north of the I-88 & 290 corridor. The very low visibility is making for hazardous travel. EXTRA travel time & caution for the early commute. #ILwx #ClearlyItsMonday pic.twitter.com/4aerZyjerY

— NWS Chicago (@NWSChicago) September 30, 2019

Fog is thickest and most widespread along north of Interstate 88, but some south and western suburbs will see dense fog through at least sunrise, the weather service said.

The fog could reduce visibility to a under a quarter-mile or a couple hundred feet at times, creating hazardous driving conditions, according to the weather service. Motorists are cautioned to use their headlights, slow down and leave plenty of distance ahead of their vehicles.

Mon and Tues will be unseasonably warm and humid, then turning much cooler later this week. Heavy rain possible Tues night into Wed pic.twitter.com/4diVi5sTs4

— NWS Chicago (@NWSChicago) September 30, 2019

(Source: Sun-Times Media Wire & Chicago Sun-Times 2019. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)