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 3:01 IBWC holds public meeting in Coronado on Tijuana Valley sewage crisis 2:21 Breeders' Cup to generate about $150M for San Diego County economy 2:56 Mobile air monitoring vehicle to detect toxic gases near Tijuana River Valley 2:43 Program offers some Mesa College grads guaranteed admission to HBCUs 2:08 San Diego police increase efforts to stop human trafficking, prostitution
