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

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as Texas, AirNow's data shows. The EPA has declared the air quality in states ...

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts ...

The summer of 2025 has brought some of the worst air quality ever recorded to large parts of the United States. Cities across the Midwest and Northeast—especially Chicago, Detroit, Cleveland, New York ...

Canadian wildfires burning across northern Manitoba and Saskatchewan are sending smoke through central Canada, the Great ...

Smoke from ongoing wildfires in Canada is impacting the air quality in states across the Midwest and Northeast of the U.S.

MINNEAPOLIS (AP) — A wildfire in the Superior National Forest of northeastern Minnesota has grown to 5 square miles (13 square kilometers) as hot, dry and windy conditions persist, officials ...