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 ongoing wildfires across Canada continued to drift into parts of the United States on Wednesday, causing hazy skies and triggering air quality alerts in multiple states across the upper Midwest and Northeast.

Air quality specialists in the state are starting to more closely monitor wildfire activity in Canada. Because of climate change, those fires are becoming more intense and reaching areas closer to the Northeast,