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Wildfire Smoke Makes Montreal And Toronto Worst Cities For Air Quality

MONTREAL, CANADA - JUNE 6: A view of Montreal's Jacques Cartier Bridge obscured by travelling wildfire smoke, in Montreal, Quebec, Canada, on June 6, 2025. As hundreds of wildfires rage across Canada, drifting smoke has triggered emergency evacuations, power outages, and air quality alerts in Ontario, Quebec, and parts of the U.S., with Montreal ranking as the second most polluted city in the world on June 6, ahead of Delhi and Santiago, and Toronto placing fourth, according to IQAir. (Photo by STR/NurPhoto)

2025 Accidents and Disasters Air Pollution Airquality Alerts Atmosphere Business Finance and Industry Canada City Life Climate Climate Change Cloud - Sky Communication Condition Crisis Damaged Danger Destruction Disaster Domestic Life Ecosystem Environment Environmental Issues Evacuations Exposure Fire Fire - Natural Phenomenon Forest Fire Hazard Health Horizontal IQAir Impact Lifestyles Montreal Natural Disaster Nature North America Ontario Overcast Photography Pollution Port Quebec Québec Ranking Resilience Sky Smog Smoke Social Issues Toronto Wildfires Wind city cityscape emergency infrastructure motion outdoors safety urban visibility weather Montreal Canada Jacques Cartier Bridge wildfire smoke Quebec wildfires emergency evacuations power outages air quality alerts Ontario U.S. pollution IQAir Delhi Santiago Toronto second most polluted city fourth place June 6 2025 drifting smoke Montreal ranking air pollution environmental impact health risks smoke obscured air quality global pollution cross-border impact wildfire crisis smoke travel pollution ranking smoke effects urban pollution.