SmogRank / Countries / Reunion / August 2026

Most polluted cities in Reunion, August 2026

1 city in Reunion ranked by their average PM2.5 over the 31 days. Worst: Saint-Denis at 3.6 µg/m³, #2,283 of 2,312 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Saint-DenisReunion
    3.6
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, August 2026 · Reunion now