By Elizabeth Wolfe and Joe Sutton, CNN

Smoke from more than 1,000 wildfires burning across Canada has wafted over the northern US, bringing poor air quality and pollution that threaten residents’ health to northern US cities including Chicago, Illinois, and Minneapolis, Minnesota.Chicago, Minneapolis and Detroit, Michigan, are now among at least three major US cities that are ranked in the top 20 most polluted cities in the world, according to global pollution tracker IQAir.The smoke has drifted over the Great Lakes region, in particular, as about 1,090 active fires blaze throughout Canada, more than 670 of which are considered “out of control,” according to the Canadian Interagency Forest Fire Centre. That’s up from more than 880 fires there last week.

The full CNN Story regarding the local air pollution from the Canadian wildfires is available at the link here.

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