February 10, 2021 7:52 am Air Quality: What Is It and What Does it Measure? NBC 7’s Sheena Parveen explains how air quality is measured and how data is collected in San Diego. US & World Videos 2:16 It's not too early to make summer-camp plans for your children 3:57 For many families, recovering from the 2024 flood still means rebuilding 3:49 A year later, a flood of flooding lawsuits continue making their way through the courts 0:58 Del Mar takes in evacuated horses after brush fire in Bonsall 2:48 Some struggling January 2024 flood victims never returned to their homes