Air quality now
Air quality in Toronto
Canada
Above WHO limits — PM2.5 is 1.4× the WHO limit
🚬 Breathing this all day ≈ smoking 1.0 cigarette
Each ball below is a pollutant measured in Toronto, sized against WHO safe limits — it's a snapshot of the air, not a map.
- PM2.522 µg/m³1.4×
- PM1022 µg/m³0.5×
- NO₂22 µg/m³0.9×
- O₃44 µg/m³0.4×
- SO₂5 µg/m³0.1×
- CO219 µg/m³0.1×
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.