CHICAGO (CBS) — In the Windy City, wind chill is a term we often use to describe how cold it feels to us as soon as we step outside. The wind chill is based on the rate of heat loss from exposed skin ...

Wind chill and heat index are often both referred to as the "feels-like temperature." Of course, heat index tells us the real feel over the summer, and wind chill tells us the real feel in winter.

What does it really mean when my weatherman says that it feels like minus-20 in Chicago? Is there a wind chill thermometer somewhere, or is he just using a mathematical formula? Let's answer these and ...

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 ...