March 30, 2021 1:52 pm UV Index: Why Does It Change Throughout the Year? How do UV rays change throughout the year and why is it possible to get a sunburn even when it’s cloudy? NBC 7 Meteorologist Sheena Parveen has everything you need to know about the UV index. US & World Videos 2:50 San Diego heroes who rescued shark-attack victim to receive Carnegie Medals 2:26 San Diego weather today: Brooke Martell's forecast for Oct 1, 2024 44:51 Padres vs. Braves: Wild Card Preview with Kyle Glaser | On Friar Podcast 2:57 Meet the Candidates: Race to represent California in the US Senate 3:05 Weekly dinners offer lifeline to homeless San Diegans