What is the Wind Chill Factor?  Wind chill factor comes from a
formula that calculates what the air feels like. Article Details
• Written By: Michael Pollick   • Edited By: Niki Foster   •
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your Site/Blog Humans can smell disease, research suggests. 
more...   In practical weather terms, there is an actual air
temperature and a "feels like" temperature. Television
meteorologists often provide both numbers during especially hot
summer days or cold winter days. In the summertime, the "feels
like" temperature is called the heat index, but during the
winter, the "feels like" temperature is often called the wind
chill factor. This is a combination of air temperature and wind
speed that affects the freezing rate of exposed skin.  A quick
demonstration of the effects of wind chill can be performed at
your desk right now. Simply blow a fast stream of air across
your exposed forearm or hand