Science Surfing Earth Wind Chill Update Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Science News November 19, 2001 at 1:19 pm The National Weather Service has revised its formula for calculating wind chill. These Web pages feature an explanation of the changes, a new wind chill chart relating temperature and wind speed, and a handy wind chill calculator. Go to: http://205.156.54.206/om/windchill/.