What is the air quality in Sudbury?

Sudbury, Canada has an annual US AQI of 36 (Reasonable) and average PM2.5 of 6.2 µg/m³, ranking #158 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Sudbury?

October is typically the cleanest month (AQI 28) and July the most polluted (AQI 46).

Where does Sudbury's air quality data come from?

PM2.5: 1998–2026 (monitors 2013–2026, satellite 1998–2012; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Sudbury, Canada — Air Quality & Clean City Guide 2026

Sudbury Air Quality Data

Global rank	City	Continent	AQI	PM2.5
158	Sudbury, Canada	North America	AQI 36	PM2.5 6.2 µg/m³