Canadian wildfire smoke is drifiting across Michigan. As of July 31, the entire state is under an advisory for unhealthy air.

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

Canadian wildfire smoke creates health risks in Minnesota. Poor air quality spreads statewide, prompting a Weather Impact ...

Southeastern states are seeing high temperatures again Thursday while the Northeast and Midwest get a break from the heat ...

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to persist for several days.

The elevated levels of fine particulate matter resulting from wildfire smoke could present significant health risks.

Last week, Canadian wildfire smoke blanketed Wisconsin and caused the Air Quality Index to reach the unhealthy level for ...

State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is ...

As wildfire smoke becomes a frequent summer hazard across large parts of the US, knowing the risk at the neighborhood scale ...

Canadian wildfire smoke returns, bringing haze to Michigan. As of July 25, advisories are in effect for the U.P. and northern ...

Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into ...