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

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

Republican-run states contend in a lawsuit that the agency's deadlines for the plans are arbitrary and capricious.

The EPA collects data for the AQI from some 4,000 air quality monitoring stations dotted around the country. But air quality ...

The Center for Biological Diversity and the Patagonia Area Resource Alliance say federal regulators failed to review a ...

The CA Environmental Protection Agency secretary explains the cleanup phases for LA’s wildfires, and expects no complications ...

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

Certain factors impact how long it takes for you to cross that finish line, but what about the air quality? Recently, ...

Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as tiny soot ...

The group called on “Governor (Gavin) Newsom, state legislators, and our air quality regulators to join us — to clean up our ...

Four Texas counties were recently flagged by the Texas Commission on Environmental Quality for exceeding federal air quality ...