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

Smoke from wildfires burning in Canada has caused air quality alerts for parts of New York state, including New York City.

Wildfires raging across remote areas of northwest Canada are proving nearly impossible to contain, according to the Times Union. With more than 200 active fires, many in roadless, unmanaged forest, Canadian firefighters remain overwhelmed—leaving much of the Northeast,