MIDDLETOWN, N.Y.—The air quality for tens of millions of Americans and Canadians is being negatively affected by a series of fires in western Ontario and northern Minnesota.
Fires broke out earlier this month during a dry and hot streak hitting the northeast, affecting the border region between Ontario and Minnesota and the regions northwest of Lake Superior. The smoke has drifted over many Northeastern states, including New York City and Boston, and could move south toward the District of Columbia.
The smoke has created hazy sky conditions and reduced air quality. The New York governor’s office issued warnings about the combined effects of smoke and heat, saying that it could hurt young and sick people, and that strenuous outdoor activities should be limited….