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 ...

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

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

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

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

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

Those includes lead, arsenic, and asbestos, which the Air Quality Index does not typically measure for. That means even if the index is good in your area, dangerous particulate matter not visible ...