SmogRank / World / France / Bourgogne-Franche-Comté / November 2025
Most polluted cities in Bourgogne-Franche-Comté, France, November 2025
2 cities in Bourgogne-Franche-Comté, France ranked by their average PM2.5 over the 30 days. Worst: Montbéliard at 13.7 µg/m³, #641 of 2,662 cities in the world. Cleanest: Auxerre at 7.1. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Montbéliard 0%
- 2Auxerre 0%
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, November 2025, smogrank.com/fr/region/bourgogne-franche-comte/history/2025-11 (accessed 6 Oct 2026).
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.