SmogRank / World / France / Bourgogne-Franche-Comté / September 2026

Most polluted cities in Bourgogne-Franche-Comté, France, September 2026

4 cities in Bourgogne-Franche-Comté, France ranked by their average PM2.5 over the 30 days. Worst: Auxerre at 5.2 µg/m³, #2,178 of 2,949 cities in the world. Cleanest: Nevers at 4.0. A city needs measurements on 70% of the days to be ranked.

← Auxerre 5.2 µg/m³ 20 µg/m³0
Every city in Bourgogne-Franche-Comté, France ranked for September 2026, 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. 1Auxerre
    29
  2. 2Dole
    28
  3. 3Montbéliard
    27
  4. 4Nevers
    22
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

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SmogRank, most polluted cities in Bourgogne-Franche-Comté, France, PM2.5, September 2026, smogrank.com/fr/region/bourgogne-franche-comte/history/2026-09 (accessed 6 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.