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 2:49 Health violations prompt Barrio Logan's Las Cuatro Milpas to temporarily close 2:45 New California law expands who can be placed in an involuntary hold 2:30 San Diego military community reacts to New Orleans, Vegas attackers serving in military 3:53 San Diegans welcome 2025 with celebrations across the county 2:22 San Diego has one of the highest inflation rates
