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Warmer with decreasing clouds
of sunlight, then sets at
of moolight, then sets at
San Francisco will see a rise in temperatures over the next several days as partially cloudy skies make way for plenty of sunshine. more >
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.