SmogRank / World / France / Occitanie / December 2025
Most polluted cities in Occitanie, France, December 2025
2 cities in Occitanie, France ranked by their average PM2.5 over the 31 days. Worst: Nîmes at 12.8 µg/m³, #879 of 2,960 cities in the world. Cleanest: Toulouse at 11.2. A city needs measurements on 70% of the days to be ranked.
Occitanie has 10 cities ranked over the last 30 days, but only 2 here: most of its monitors have no readings for December 2025 in OpenAQ's archive, where ours come from, or too few to rank. Cities missing from this board weren't clean, just not measured.
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 Occitanie, France, PM2.5, December 2025, smogrank.com/fr/region/occitanie/history/2025-12 (accessed 7 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.