Dhaka, the overcrowded capital city of Bangladesh, has topped the list of cities with the worst air quality with an AQI index of 257 at 9:31am today (25 January). The air was classified as 'very ...

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): ...

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

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 ...

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 ...

Coverage of when the Hughes fire exploded north of Castaic, the areas under evacuation orders and an extended red flag ...

Southern California air quality monitors issued a dust and ash alert for all of Los Angeles County as strong Santa Ana winds ...