15
Good · Dominant pollutant: Ozone (O₃)
Air quality is satisfactory; air pollution poses little or no risk.
The current Air Quality Index (AQI) in Toronto is 15, categorized as Good. Air quality is satisfactory; air pollution poses little or no risk.
Pollutants & conditions
| Measurement | Value |
|---|
| PM2.5 | 9 |
| Ozone (O₃) | 14.5 |
| Nitrogen Dioxide (NO₂) | 9.4 |
| Sulfur Dioxide (SO₂) | 0.2 |
| Carbon Monoxide (CO) | 3.3 |
| Temperature (°C) | 10 |
| Humidity (%) | 57 |
| Pressure (hPa) | 1028.1 |
| Wind (m/s) | 4.1 |
PM2.5 forecast
| Date | Avg | Min | Max |
|---|
| 2026-05-19 | 36 | 19 | 51 |
| 2026-05-20 | 10 | 6 | 38 |
| 2026-05-21 | 31 | 7 | 69 |
| 2026-05-22 | 11 | 6 | 41 |
| 2026-05-23 | 19 | 9 | 36 |
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