SmogRank / Countries / Reunion
Most polluted cities in Reunion
1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Saint-Denis at 2.3 µg/m³, #1,281 in the world.
- 1Saint-DenisReunion 2.30.2×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
Reunion cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Saint-Pierre | ≈ 7 µg/m³ |
| Le Tampon | ≈ 7 µg/m³ |
| Saint-André | ≈ 9 µg/m³ |
| Saint-Louis | ≈ 7 µg/m³ |
| Saint-Benoît | ≈ 7 µg/m³ |
| La Possession | ≈ 9 µg/m³ |
| Saint-Leu | ≈ 7 µg/m³ |
| Sainte-Marie | ≈ 9 µg/m³ |
| Le Port | ≈ 9 µg/m³ |
| Piton Saint-Leu | ≈ 7 µg/m³ |
| Sainte-Suzanne | ≈ 9 µg/m³ |
Updated 2026-10-01 22:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.