The National Weather Service has issued a heat advisory for several counties in south-central Pennsylvania, warning of heat index values up to 104 degrees on Friday.

Canadian wildfire smoke is again causing air quality problems in Northwest Wisconsin, leading to an air quality alert from ...

Smoke from northern wildfires is causing poor air quality alerts across Minnesota, with St. Cloud on the edge of unhealthy conditions. Outdoor activities are best limited for sensitive individuals.

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

Minnesota experts say Canadian wildfires will lead to more poor air quality days across Minnesota this summer, and into the future as temperatures and drought increase.

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

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

Maybe it’s environmental calamities or our over-scheduled lives, but the season feels like it’s picking up speed.

With more than six million people living in just those four cities alone and an additional 9.5 million in NYC, OKC, and ...

Canadian wildfire smoke remains in Michigan. On July 16, officials issued an air quality advisory for western counties.

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for ...

Canadian wildfire smoke lingers in Michigan. Officials issued an air quality advisory in southeast Michigan for July 15.