SmogRank / World / France / Bourgogne-Franche-Comté / 2025

Most polluted cities in Bourgogne-Franche-Comté, France, 2025

2 cities in Bourgogne-Franche-Comté, France ranked by their average PM2.5 over the 365 days; 2 above the WHO annual guideline (5.0 µg/m³). Worst: Montbéliard at 10.3 µg/m³, #865 of 2,624 cities in the world. Cleanest: Auxerre at 8.2. A city needs measurements on 70% of the days to be ranked.

  1. 1Montbéliard
    532.1×
  2. 2Auxerre
    461.6×
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, 2025 · All cities in France, 2025 · Bourgogne-Franche-Comté now

Use this board

SmogRank, most polluted cities in Bourgogne-Franche-Comté, France, PM2.5, 2025, smogrank.com/fr/region/bourgogne-franche-comte/history/2025 (accessed 6 Oct 2026).

Download top 10 (PNG)

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.