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Apparent temperature: The heat index; using air temperature and relative humidity, how hot it feels to an “average” person (147 pounds) wearing light clothing and walking 3.1 m.p.h. in a 5 m.p.h. wind.
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Tom Skilling is chief meteorologist at WGN-TV. His forecasts can be seen Monday through Friday on WGN-TV News at noon and 9 p.m.
WGN-TV meteorologists Steve Kahn, Richard Koeneman and Paul Dailey plus weather producer Bill Snyder contribute to this page.
