SmogRank / World / Reunion / October 2023

Most polluted cities in Reunion, October 2023

3 cities in Reunion ranked by their average PM2.5 over the 31 days. Worst: Saint-Denis at 5.6 µg/m³, #1,380 of 1,686 cities in the world. Cleanest: Saint-Joseph at 3.7. A city needs measurements on 70% of the days to be ranked.

← Saint-Denis 5.6 µg/m³ 20 µg/m³0
Every city in Reunion ranked for October 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Saint-DenisReunion
    31
  2. 2Saint-PaulReunion
    26
  3. 3Saint-JosephReunion
    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, October 2023 · Reunion now

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SmogRank, most polluted cities in Reunion, PM2.5, October 2023, smogrank.com/re/history/2023-10 (accessed 2 Oct 2026).

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