July 27, 2015; 10:34 PM ET
Several days of excessive heat and humidity will put many at risk across a large portion of the United States this week. more >
Rises at 6:18 AM with 14:15 of sunlight, then sets at 8:33 PM
Rises at 9:59 PM with 12:08 of moolight, then sets at 10:07 AM
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.