The EPA measures regional air quality index (AQI) by how hazardous it is to the general public. Discover the AQI in your city by searching below.

A map from AirNow suggests that the air quality around Los Angeles and Anaheim ... due to severe drought conditions and wind gusts. The National Weather Service described the situation as ...

Air quality levels across large swathes of California ... surface frontal system southward across the area, according to the National Weather Service. This upper-level low is expected to stall ...