New York City recorded the worst air quality, yesterday, among major cities worldwide as smoke from more than 150 wildfires burning in Quebec drifted over much of the country, prompting authorities to issue an advisory.
NYC Mayor Eric Adams has advised residents to minimize outdoor activity and wear high-quality masks.
Tuesday saw Environment Canada issue strict air pollution warnings for Ottawa and Toronto.
Canada is battling a devastating wildfire season, as 2,214 fires have destroyed more than 8 million acres so far. Authorities attribute one of the worst wildfire seasons on record to climate change.