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A shower or thunderstorm
A shower in the afternoon
Times of clouds and sun
of sunlight, then sets at
of moolight, then sets at
Strong thunderstorms will threaten Chicago this weekend before the city gets a taste of September. more >
Nov 12, 2012; 5:00 AM ET
The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.