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.

As of Tuesday morning, the Air Quality Index in Milwaukee was between 115 to 120, which falls in the "unhealthy for sensitive ...

Cities forecasted to see levels of ozone that are "unhealthy for sensitive groups" include Danbury, Hartford, Middletown and ...

Wildfire smoke descended into the U.S. on Thursday, prompting alerts that asked people to keep an eye out for health symptoms ...

Around noon on Saturday, New York City Emergency Management issued an air quality health advisory as the Big Apple’s air ...

Smoke from Canadian wildfires is enveloping the Tri-State area, leading to an air-quality alert that has been extended ...

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

The North Country and northern Vermont have an Air Quality Alert out because the Air Quality Index (AQI) will straddle the “unhealthy for sensitive groups” and “unhealthy” categories today. Meanwhile, ...

If you have breathing problems, be sure to take it easy on Wednesday and limit outdoor time. Air quality will be unhealthy ...

Today Dhaka’s air was classified as ‘unhealthy for sensitive groups’ referring to a health threat, according to the AQI index ...