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

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

States across the U.S. are feeling the impact of the Canadian wildfires as air quality takes a hit from the smoke, according ...

As of Aug. 6, there are about 750 active Canadian wildfires, with at least 190 labeled “out of control,” according to the ...

Having breathing trouble today? Canadian wildfire smoke is drifting across Ohio today, dropping the air quality in parts of ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states from Wisconsin to Maine.

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

The Canadian government’s map of wildfire smoke fine particulate matter models for Aug. 2-3 shows smoke will intensify over ...

The Canadian government’s map of wildfire smoke fine particulate matter models wildfire smoke for July 30-Aug. 2 shows smoke ...

Smoke from Canadian wildfires hovered over the U.S. Midwest Saturday, prompting unhealthy‑air alerts across many states including Iowa, Minnesota and Wisconsin.

Rapidly growing wildfires in several provinces forced thousands of people from their homes and prompted air-quality warnings ...