India, July 17 -- Toronto is experiencing very poor air quality as wildfire smoke drifting from northern Ontario has pushed the Air Quality Health Index into the 10+ (Very High Risk) category, according to Environment Canada. The advisory warns that smoke concentrations are elevated across the city and the Greater Toronto Area, reducing visibility and increasing health risks for residents. Officials say fine particulate matter (PM2.5) from active wildfires is the primary cause of the sharp deterioration in air quality.

Why Wildfire Smoke is Affecting Toronto

Smoke from hundreds of active wildfires burning across Canada, including several major fires in northern Ontario, has been carried southward by changing wind patterns. The dense smo...