May 4, 2015; 11:06 AM ET
A surge of warmth into the Northeast will create Boston's warmest day so far this year on Monday. more >
Colder with plenty of clouds
Plenty of clouds
Rises at 5:20 AM with 14:46 of sunlight, then sets at 8:06 PM
Rises at 8:36 AM with 14:40 of moolight, then sets at 11:16 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.