Hazy air along the East Coast and parts of the Midwest is being caused by more than 80 wildfires burning over 1 million acres across 13 Western states.

Multiple areas have had air quality alerts issued, including the entire state of New York, which issued it on Tuesday over concerns about the amount of “Fine Particulate Matter” in the air. Other areas include parts of New Jersey, Baltimore and other parts of Maryland, the majority of Minnesota, and several counties in central Pennsylvania.