What is the air quality in Calgary?

Calgary, Canada has an annual US AQI of 43 (Reasonable) and average PM2.5 of 8.1 µg/m³, ranking #384 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Calgary?

October is typically the cleanest month (AQI 36) and August the most polluted (AQI 54).

Where does Calgary's air quality data come from?

PM2.5: 1997–2026 (monitors 1997–2023, 2025–2026, low-cost sensors 2024, satellite 2024; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Calgary, Canada — Air Quality & Clean City Guide 2026

Calgary Air Quality Data

Global rank	City	Continent	AQI	PM2.5
384	Calgary, Canada	North America	AQI 43	PM2.5 8.1 µg/m³