Air quality now
Air quality in Toronto
Canada
Above WHO limits — O₃ is 1.1× the WHO limit
- PM2.58 µg/m³0.5×
- PM108 µg/m³0.2×
- NO₂9 µg/m³0.4×
- O₃107 µg/m³1.1×
- SO₂3 µg/m³0.1×
- CO144 µg/m³0.0×
What you're seeing
Each ball is a pollutant measured in Torontoright now. The more balls of a colour, the more of that pollutant is in the air — normalised against the World Health Organization's safe limits, so a hazy city looks unmistakably denser than a clean one. Data is live from Open-Meteo / CAMS. How Polly works →
Want your own city and a hay-fever pollen view? Open the live map, or track your symptoms against the air.