Air quality in Toronto currently among worst in world due to wildfire smoke - 06/07/2025

Haze from wildfire smoke is drifting into Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality is ranking among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta is drifting into the region. Toronto's air quality is currently ranking as the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This is placing it below Santiago, Chile, and above Montreal, which is also facing wildfire smoke from western provinces. Environment Canada is urging residents to limit their time spent outdoors and is advising that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada is noting that smoke may cause mild irritation to your eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.