SmogRank / World / Reunion / May 2026

Most polluted cities in Reunion, May 2026

1 city in Reunion ranked by their average PM2.5 over the 31 days. Worst: Saint-Denis at 3.4 µg/m³, #2,442 of 2,522 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Saint-DenisReunion
    5
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. 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, May 2026 · Reunion now

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SmogRank, most polluted cities in Reunion, PM2.5, May 2026, smogrank.com/re/history/2026-05 (accessed 2 Oct 2026).

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