Air Quality Numbers Explained: As pollution in Delhi continues to rise without pause, residents are constantly checking the AQI levels to decide when it might be safe to step outdoors. Air Quality ...

Air pollution is in the "unhealthy" category for a region of California on Thursday morning, encompassing the towns of Keeler ...

Weather conditions trapping wood smoke pollution near the ground prompted the Bay Area Air District to issue a Spare the Air ...

New York City and some of the surrounding area are under an air quality alert Wednesday. The alert will be in effect from 11 a.m. to 11 p.m. New York officials say the alert will impact the city, ...

Smoke from the Green Fire and other wildfires burning in and near Shasta County are polluting the air over the North State. The Shasta County Air Quality Management District and Shasta County Health ...

Smoke from wildfires raging in Canada has drifted into the United States, affecting air quality as far south as Florida and creating a "very unhealthy" situation in parts of Minnesota on June 3, ...