What is the air quality in Barrie?

Barrie, Canada has an annual US AQI of 40 (Reasonable) and average PM2.5 of 7.2 µg/m³, ranking #263 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Barrie?

October is typically the cleanest month (AQI 33) and July the most polluted (AQI 49).

Where does Barrie's air quality data come from?

PM2.5: 1998–2026 (monitors 2001–2023, 2025–2026, satellite 1998–2001, 2024; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Barrie, Canada — Air Quality & Clean City Guide 2026

Barrie Air Quality Data

Global rank	City	Continent	AQI	PM2.5
263	Barrie, Canada	North America	AQI 40	PM2.5 7.2 µg/m³