September 20, 2014; 2:01 AM ET
In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Philadelphia. more >
Intervals of clouds and sunshine
Rises at 6:49 AM with 12:16 of sunlight, then sets at 7:05 PM
Rises at 3:26 AM with 13:41 of moolight, then sets at 5:07 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.