An air quality advisory for Long Island is the result of smoke from Canada wildfires, New York State officials say.

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

Canadian wildfire smoke is triggering air quality alerts across the U.S. Midwest and Northeast on Thursday, as the northern nation’s boreal forests continue to burn at a rate not seen except for a historic season in 2023.