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

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

On Wednesday, March 5, people recieved alerts on their phones saying "unhealthy air quality for sensitive groups." The excess smoke from the fires can be dangerous for some neighbors in those ...

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.

Officials are urging residents to take precautions as wildfire smoke and extreme heat bring poor air quality and health risks ...

Air quality in Great Falls was listed as unhealthy for sensitive groups on Saturday, but it didn’t keep some people from getting out and trying to enjoy what should have been a nice summer day.

New York City’s air quality has dropped to unhealthy levels for sensitive groups as smoke from Canadian wildfires drifts into ...

An air quality alert is in effect today, according to the National Weather Service. The New Jersey Department of Environmental Protection has issued a “Code Orange” alert. According to airnow.gov, the ...

The 'unhealthy for sensitive groups' air quality in Chicago comes as an air quality alert was issued for the entire state of ...

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

The Canadian wildfire smoke that covered northwest Wisconsin July 24 has moved south and is causing air quality problems in ...