SmogRank / World / France / Grand Est / October 2025

Most polluted cities in Grand Est, France, October 2025

No city in Grand Est, France had measurements on 70% of the days, so October 2025 has no board for Grand Est, France.

Grand Est has 10 cities ranked over the last 30 days, but none here: most of its monitors have no readings for October 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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