Toronto's air quality ranks worst in Western Hemisphere as Quebec wildfires send smoke south
An air quality index of 86 puts Toronto 19th worst globally Monday morning, but worst in the Americas. The haze from fires in Quebec is expected to linger through Tuesday.
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Wildfire smoke from Quebec has blanketed Toronto with the worst air quality in the entire Western Hemisphere as of Monday morning. With an air quality index of 86, Toronto ranked 19th globally but worst in the Americas on the pollution-tracking site IQAir.
Environment and Climate Change Canada warns that the air quality poses a "moderate" health risk Monday, with similar conditions forecast for Tuesday. The haze could combine with the extreme heat expected this week to create hazardous conditions.
The City of Toronto advises residents to limit outdoor activities during wildfire smoke events and to keep windows closed when possible, or use an air filter to reduce indoor air pollution. Poor air quality and wildfire smoke can cause eye and throat irritation, coughing, headaches, difficulty breathing, and chest pain.
The facts
What was Toronto's air quality index on Monday, July 13, 2026?
Toronto's air quality index was 86 on Monday, July 13, 2026, making it the worst in the Western Hemisphere and 19th worst globally according to IQAir.
How long is the smoke from Quebec wildfires expected to affect Toronto?
The haze from Quebec wildfires is expected to linger through Tuesday, July 14, 2026.
What health risk does Environment and Climate Change Canada warn about?
Environment and Climate Change Canada warns that the air quality poses a moderate health risk on Monday, July 13, 2026, with similar conditions forecast for Tuesday, July 14, 2026.
What does Toronto advise residents to do during wildfire smoke events?
The City of Toronto advises residents to limit outdoor activities during wildfire smoke events and to keep windows closed when possible, or use an air filter to reduce indoor air pollution.
