SmogRank / World / Reunion / April 2026

Most polluted cities in Reunion, April 2026

1 city in Reunion ranked by their average PM2.5 over the 30 days. Worst: Saint-Denis at 3.8 µg/m³, #2,450 of 2,573 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Saint-DenisReunion
    21
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, April 2026 · Reunion now

Use this board

SmogRank, most polluted cities in Reunion, PM2.5, April 2026, smogrank.com/re/history/2026-04 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.