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

Specialized air quality instruments captured a spike in lead, chlorine, and bromine pollution during the L.A. wildfires.

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

In the wake of the Palisades and Eaton fires, concerns about air quality across the county have been on the rise.

Even though the Palisades and Eaton fires are now mostly contained, the Santa Ana winds have led to new fires flaring up ...

A fire that broke out at a debris site near Weaverville Jan. 15 is almost out, but the investigation around its cause is ...

Air quality in San Francisco is improving, according to an Axios analysis of year-over-year EPA data. Why it matters: Long-term exposure to poor air quality is harmful to your health. A growing body ...

Poor air quality isn't always obvious, but it's a serious health issue affecting both our indoor and outdoor environment ...

Hanoi authorities are under significant pressure to improve air quality, particularly as the city rotates in and out of the ...

Dr. Kelly Johnson-Arbor, a toxicologist at MedStar Health, warns that the pollutants released by the recycling center fire ...