SmogRank / World / French Guiana / July 2025

Most polluted cities in French Guiana, July 2025

2 cities in French Guiana ranked by their average PM2.5 over the 31 days. Worst: Cayenne at 5.2 µg/m³, #2,272 of 2,499 cities in the world. Cleanest: Kourou at 3.3. A city needs measurements on 70% of the days to be ranked.

  1. 1CayenneGuyane
    29
  2. 2KourouGuyane
    18
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, July 2025 · French Guiana now

Use this board

SmogRank, most polluted cities in French Guiana, PM2.5, July 2025, smogrank.com/gf/history/2025-07 (accessed 3 Oct 2026).

Download top 10 (PNG)

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