If you’re in eastern Pennsylvania or New Jersey and noticed a haze in the sky Sunday morning, you weren’t imagining things.

Red areas were considered "unhealthy," while orange ones were "unhealthy for sensitive groups." A map of the Air Quality Index ratings across the country on February 4.

The best way to protect yourself from poor air quality is to stay indoors, especially when the Air Quality Index reaches ...

"The New Jersey Department of Environmental Protection has issued a code orange air quality alert Tuesday for Ocean County ...

Smoke from Canadian wildfires persisted across the Upper Midwest on Friday, prompting air quality alerts for millions.

The Minnesota Pollution Control Agency has issued an Air Quality Alert for much of central and northern Minnesota for Tuesday ...

If you were planning to be outdoors on Saturday, you might want to reconsider. That's because an air quality alert has been ...

A code orange air quality alert and a heat advisory are in effect across portions of New Jersey and eastern Pennsylvania ...

Canadian wildfire smoke no longer lingers in Michigan as of July 18. Southwest Michigan will experience unhealthy air for sensitive groups on July 21.

Unhealthy air quality is expected in southern Rhode Island on Tuesday, July 29, due to high ground-level ozone. Residents are advised to limit strenuous outdoor activities, especially during the ...

An air quality alert was issued by the National Weather Service in Green Bay at 1:52 p.m. on Wednesday, July 23.