September 1, 2015; 5:41 PM ET
Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. more >
More clouds than sun; remaining very warm with a shower or thunderstorm possible
Partly cloudy with a shower in the area late
Rises at 6:25 AM with 12:52 of sunlight, then sets at 7:17 PM
Rises at 1:10 AM with 14:43 of moolight, then sets at 3:53 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.