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

Indicators like the Air Quality Index (AQI), commonly used to track air pollution levels, provide a rough sense of the ...

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

Recent data from the Environmental Protection Agency shows air quality in certain regions of the U.S. is deteriorating, ...

Experts say that even after fires are contained and extinguished, health risks from ash, smoke, and toxic materials, ...

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

A fire at the Owl Metals recycling facility that caused the Peninsula Expressway to shut down is still causing an air quality ...