Between the lines: AQI wasn't set up to monitor ash falling from the sky. Even if you see a low AQI score, "it could be downwind from a burn area and experience a lot of ash, and that won't show ...

As wildfires blaze in Los Angeles County and firefighters work to extinguish the flames, many residents are evacuating. Over 10,000 structures have been destroyed, and millions of people in ...

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.