Chicago is, currently, colder than Antarctica
Chicago is also colder than North Pole, Alaska, where highs are in the mid-20s. A cold weather advisory is in effect until noon on Monday in Chicago, with wind chills as low as 20 to 25 degrees below zero. The advisory will take effect again at 9 p.m. Monday until Tuesday at noon, when wind chills could be as low as 30 degrees below zero.