Smoke from wildfires in Canada continue to impact air quality in the northern United States, even in the New York City metro area and Hudson Valley.

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.

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,