What is the air quality in St. John's?

St. John's, Canada has an annual US AQI of 32 (Reasonable) and average PM2.5 of 4.9 µg/m³, ranking #75 of 5856 cities. Main pollutant: O3.

What is the cleanest month in St. John's?

September is typically the cleanest month (AQI 28) and April the most polluted (AQI 37).

PM2.5: 1998–2024 (monitors 1998–2024, satellite 1998, 2000). Measured by government monitoring stations. Full sources are on the methodology page.

Global rank	City	Continent	AQI	PM2.5
75	St. John's, Canada	North America	AQI 32	PM2.5 4.9 µg/m³