Canada wildfires spread smoke across Northeast, worsening air quality in NYC, Chicago and MN

Parts of the U.S. have the worst air quality in the world on Thursday as wildfire smoke from Canada and Minnesota settles in. The smoke started to move in across the upper Midwest and the Northeast on Wednesday, bringing hazy skies and a foul-smelling odor to millions. Conditions are expected to spread into Friday, reaching further south through the Midwest and into Appalachia and the East Coast. #wildfires #canada #airquality