After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free ...

The air has improved in the LA region as firefighters get blazes under control, but there are questions about how safe the ...

The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...

Think back to the red AQI forecast on your phone. What information was it trying to convey? The Air Quality Index (AQI) is a ...

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — ...

KCRW and R&S Kayne Foundation Los Angeles held a public information panel and Q&A session regarding immediate and long-term ...

Dust and ash left behind from the January wildfires in Los Angeles County can be irritating and hazardous to health when it’s ...

The Air Quality Index measured 156 near Forks, Washington, and received a rating of "unhealthy," meaning some members of the ...

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

The LA wildfires have burned tens of thousands of acres – but on some weather maps, air quality still looks good. What’s ...