SmogRank / Countries / France / October 2025
Most polluted cities in France, October 2025
1 city in France ranked by their average PM2.5 over the 31 days. Worst: Saint-Avold at 6.2 µg/m³, #1,165 of 2,110 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Saint-AvoldGrand Est 6.2
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+