Toronto air quality among the worst in the world as Environment Canada issues special alert CTV NewsSmoke From Canadian Wildfires Wafts Over New York City The New York TimesNYC air quality plummets as Canadian wildfire smoke invades US — and more bad air is on the way New York PostHazy Shade of Summer: Air Quality Hits Unhealthy Levels Saratoga TODAY newspaperHorrible air quality through the rest of this week KIMT
