Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

Angelenos still bothered by the smell of smoke may be surprised to see that Air Quality Index numbers returned to “healthy” or “moderate” levels this week in L.A. County, but they shouldn’t breathe a ...

But air quality can vary on a hyperlocal scale, meaning the network of official sites is "fairly ... level that really ...

Ash from the wildfires, which can irritate your skin or lungs, falls out of the air and settles onto the ground and therefore ...

Those groups particularly sensitive to particulate matter in the air may want to limit time outside Friday and Saturday.

If you have been hearing about poor air quality in New York City Friday, you can breathe a deep sigh of relief (literally): ...

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

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

Sensitive ecosystems are damaged by air pollution, and related illnesses take a toll on the healthcare system. If air quality affects human health, does it ... the Air Quality Index or AQI is ...