Thursday started off brutally cold in Chicago, with wind chills dipping below zero, but what exactly does that mean and how is it calculated? A wind chill is the "measure of how cold the air feels on ...

Tuesday morning's cold weather advisory may have passed, but the National Weather Service forecasts freezing cold temperatures will linger in Milwaukee into Wednesday morning — with wind chills ...

As several states across the U.S. face freezing temperatures, wind chills are adding another frigid layer to the winter weather conditions, making already cold days feel even colder. Millions of ...