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

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

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

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

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

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

Dust and ash left behind from the January wildfires in Los Angeles County can be irritating and hazardous to health when it’s ...

One possible reason for bad air quality in the city is a fire that broke out yesterday afternoon in Lancaster, Pennsylvania, ...

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

Wildfire ash carries many carcinogens that could cause short- and long-term health problems, including asthma attacks and ...

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