SmogRank / World / France / Grand Est / January 2023

Most polluted cities in Grand Est, France, January 2023

3 cities in Grand Est, France ranked by their average PM2.5 over the 31 days. Worst: Reims at 10.6 µg/m³, #425 of 1,225 cities in the world. Cleanest: Thionville at 4.9. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 7 of these 31 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

← Reims 10.6 µg/m³ 20 µg/m³0
Every city in Grand Est, France ranked for January 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Reims
    54
  2. 2Nancy
    44
  3. 3Thionville
    27
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, January 2023 · All cities in France, January 2023 · Grand Est now

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SmogRank, most polluted cities in Grand Est, France, PM2.5, January 2023, smogrank.com/fr/region/grand-est/history/2023-01 (accessed 6 Oct 2026).

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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.