Wildfire Smoke , Blankets the Midwest , With Hazardous Haze.<br />NPR reports that smoke from widespread <br />Canadian wildfires has enveloped U.S. cities, <br />including Detroit, Chicago and Pittsburgh.<br />The massive plume of smoke and soot has led <br />to air quality warnings across the Midwest, <br />as well as warnings of hazardous conditions.<br />According to the American Lung Association, residents <br />in Michigan have been urged to take precautions, as <br />air quality is expected to reach unhealthy levels.<br />According to Pittsburgh's NPR News Station, WESA, a thick haze is currently stretching from Erie and the Great Lakes area to reach Pittsburgh.<br />On June 28, the Pennsylvania Department <br />of Environmental Protection issued a code <br />red air quality alert for several counties.<br />On June 27, Chicago had the worst <br />air quality of anywhere in the world. .<br />Meanwhile, NPR reports that <br />the wildfires in Canada have <br />yet to show signs of easing.<br />According to the Canadian Interagency Forest <br />Fire Center, there are currently 487 wildfires, <br />with over half of them burning out of control.<br />As of June 28, over 164 Canadian communities <br />remain under air quality alerts, according <br />to federal agency Environment Canada.<br />NPR reports that new blazes have been reported in three of the most impacted provinces of Canada: Alberta, British Columbia and Quebec
