August 31, 2015; 7:25 PM ET
Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. more >
Plenty of clouds; a shower in spots in the evening followed by a little rain late
Rises at 6:30 AM with 12:33 of sunlight, then sets at 7:03 PM
Rises at 7:44 AM with 12:01 of moolight, then sets at 7:45 PM
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.