What is the air quality in Saint-Denis?

Saint-Denis, Réunion has an annual US AQI of 32 (Reasonable) and average PM2.5 of 5.7 µg/m³, ranking #81 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Saint-Denis?

April is typically the cleanest month (AQI 30) and September the most polluted (AQI 34).

Where does Saint-Denis's air quality data come from?

PM2.5: 1998–2026 (monitors 2011–2026, satellite 1998–2011, 2014–2015, 2024; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Saint-Denis, Réunion — Air Quality & Clean City Guide 2026

Saint-Denis Air Quality Data

Global rank	City	Continent	AQI	PM2.5
81	Saint-Denis, Réunion	Africa & Middle East	AQI 32	PM2.5 5.7 µg/m³