There's confusion over how safe air quality is in L.A. as fires continue to burn, spewing wildfire smoke and toxins. We look at air quality readings, what's real and what's not and what people can do.

The Air Quality Index (AQI) can tell you a lot about the health of the environment, but there are still measures you can take ...

Wear a tight-fitting N95 mask at the bare minimum, but a P100 is better, experts say. Wear long sleeves, eye protection, ...

Some of the most destructive wildfires in California's history have killed at least 25 people in Los Angeles County, caused ...

Ash from the recent LA County fires and burn scars formed by other wildfires in the fall can be dispersed by strong winds.

An air quality alert was issued on Monday at 12:41 p.m. in effect until Tuesday at 12:15 p.m. The alert is for San Bernardino ...

Air quality is a big concern for everyone in Southern California, even for those who don't live near fire zones. Here are answers to some of your top questions.

As multiple fires burn across the Los Angeles area, several districts that hoped to be open by now have stayed shuttered.

There are many pollutants of concern in wildfire smoke,” including ozone, carbon monoxide and other toxic gases, says ...

Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.