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An afternoon shower in spots
Times of clouds and sun
Partly sunny and comfortable
of sunlight, then sets at
of moolight, then sets at
An early taste of September will dominate weather headlines around Chicago this week. 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.