Thick wildfire smoke from northern Ontario is drifting south and triggering dangerous air quality warnings in Kingston while blanketing major American cities like Detroit. CTV's Kimberley Fowler reports that the Eastern Ontario Health Unit’s Medical Officer of Health Dr. Paul Roumeliotis is warning people to limit physical strain outside because fine chemical particles can enter the lungs and cause severe heart attacks. Peter Kimbell, warning preparedness meteorologist with Environment and Climate Change Canada, expects smoky conditions to improve overnight before potentially worsening again on Saturday. Health officials advise individuals to monitor the local air quality health index, which reached a high-risk level of 7 in Ottawa earlier today before dropping to a low-risk level of 2.
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