City comparison
Toronto vs Vancouver air quality
Live AQI comparison between Toronto and Vancouver. Data updates every 15 minutes.
Toronto and Vancouver differ by 15 AQI points right now. Toronto has cleaner air at this moment.
What drives air quality in Toronto and Vancouver
Toronto
Toronto's air quality is influenced by highway traffic, dense urban activity, and cross-regional transport around the Great Lakes. Nitrogen dioxide is highest near major routes and interchanges, while PM2.5 can remain elevated over wider zones during stable weather. Differences between downtown streets and lakeside areas can be pronounced.
Vancouver
Vancouver often benefits from marine ventilation, but local air quality still varies with traffic patterns, port activity, and neighborhood topography. Nitrogen dioxide peaks are most evident near busy routes and transport hubs. Valley effects and local wind sheltering can create pockets where pollutants linger longer despite moderate citywide readings.
Both cities are shaped by different combinations of traffic density, terrain, weather patterns, and seasonal events, which is why the same AQI band can feel different on the ground. Checking live readings rather than relying on reputation or past visits is the most reliable way to plan travel, exercise, or outdoor time between the two.
Live AQI from Open-Meteo (CAMS). Conditions change hourly — refresh for the latest readings. South African cities may show WAQI station data on their dedicated pages.