SmogRank / World / France / Auvergne-Rhône-Alpes / July 2026
Most polluted cities in Auvergne-Rhône-Alpes, France, July 2026
19 cities in Auvergne-Rhône-Alpes, France ranked by their average PM2.5 over the 31 days. Worst: Montluçon at 10.3 µg/m³, #1,263 of 2,751 cities in the world. Cleanest: Chambéry at 6.0. 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.
- 1Montluçon 6%
- 2Moulins 3%
- 3Aurillac 3%
- 4Romans-sur-Isère 0%
- 5Valence 0%
- 5Lyon 0%
- 7Clermont-Ferrand 0%
- 8Saint-Étienne 0%
- 9Grenoble 0%
- 10Sorbiers 0%
- 11Jonage 0%
- 11Annemasse 0%
- 13Villefranche-sur-Saône 0%
- 13Bourg-en-Bresse 0%
- 15L'Isle-d'Abeau 0%
- 16Vichy 0%
- 17Crolles 0%
- 18Bellegarde-sur-Valserine 0%
- 19Chambéry 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 Auvergne-Rhône-Alpes, France, PM2.5, July 2026, smogrank.com/fr/region/auvergne-rhone-alpes/history/2026-07 (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.