Wind chills dropped to as low as minus 22 degrees Tuesday at O'Hare Airport, and similar conditions were expected overnight into Wednesday morning, the National Weather Service said.

Bundle up, Chicago, The first of two cold weather advisories this week was in effect for much of northeastern Illinois until 11 a.m. Monday morning, the National Weather Service said, with wind chill values or “feels like” temperatures as low as 20 to 25 degrees below zero.

The Chicago area has been experiencing frigid conditions this week. Temperatures are expected to hover in the single digits into midweek, officials said.

The National Weather Service on Monday afternoon released forecasted minimum wind chill values for the early morning hours of Tuesday, and it looks like McHenry County is expected to have some of the chilliest temperatures in the Chicago area,

The National Weather Service has issued a Winter Weather Advisory in Chicago from 9 a.m. Wednesday to 3 a.m. Thursday.

Monday and Tuesday will be the coldest days of the week with wind chills of minus 15 to 20 degrees, according to the National Weather Service.

More than six inches of snow is possible across the Chicago area, including in McHenry County, as a winter storm is expected to hit the area hard on Wednesday. According to the latest weather update from the National Weather Service,

Temperatures have plummeted across the Chicago area Monday, with even colder temperatures set for Tuesday. The National Weather Service has issued a Cold Weather Advisory is in effect until 11 a.m. for La Salle,

More than six inches of snow is possible across the Chicago area, including in McHenry County, as a winter storm is expected to hit the area hard on Wednesday. According to the latest weather update from the National Weather Service,

February is ending on a warmer note for Chicago, with a mild stretch of weather hitting the region just one week after dangerously cold wind chills closed schools and made for brutal conditions.

While a cold weather advisory continues in parts of the Chicago area for a third day, temperatures are on track to gradually warm-up, the NBC 5 Storm Team said, with highs in the low-to-mid 40s by early next week.

Chicago and the surrounding areas remain under a cold weather advisory as dangerously below zero wind chills could cause frostbite within 30 minutes of exposure.