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

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

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

The city experienced another warm day with the maximum temperature reaching 23.7 degrees Celsius on Friday, three degrees ...

Delhi recorded a maximum temperature of 23.7 degrees Celsius with moderate air quality on Friday, the India Meteorological Department (IMD) said. The 24-hour average Air Quality Index (AQI) was ...

One possible reason for bad air quality in the city is a fire that broke out yesterday afternoon in Lancaster, Pennsylvania, where air quality is notably unhealthy. Why would a fire more than 150 ...

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

The areas surrounding the wildfire, including the San Gabriel Mountains, the 5 Freeway corridor near Castaic Lake and Santa Clarita, are expected to be the most impacted by the Hughes fire, which ...

Today’s air was classified as ‘very unhealthy', referring to a severe health threat, according to the AQI index ...

In the aftermath of L.A.’s most destructive wildfires, air quality experts warn that families should be prepared for the “disaster after the disaster” — ...

LA County Sheriff says about 31,000 people were under mandatory evacuation orders while another 23,000 were under evacuation ...

A wildfire erupted near Castaic Lake Wednesday, sending plumes of smoke into neighboring Ventura County areas. Here's what to know.