SmogRank / World / Europe / France / Pays de la Loire
Most polluted cities in Pays de la Loire, France
No city in Pays de la Loire, France has enough readings to rank so far this year.
A city joins this ranking with enough days of readings so far this year; none here has that right now, so there is nothing to map or chart.
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
Estimated: cities without a monitor
Pays de la Loire cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Cholet | ≈ 6 µg/m³ |
| Saint-Herblain | ≈ 6 µg/m³ |
| Rezé | ≈ 6 µg/m³ |
| Saumur | ≈ 6 µg/m³ |
| Saint-Sébastien-sur-Loire | ≈ 6 µg/m³ |
| Orvault | ≈ 6 µg/m³ |
| Vertou | ≈ 6 µg/m³ |
| Couëron | ≈ 6 µg/m³ |
| Challans | ≈ 6 µg/m³ |
| La Flèche | ≈ 5 µg/m³ |
| La Chapelle-sur-Erdre | ≈ 6 µg/m³ |
| Carquefou | ≈ 6 µg/m³ |
| La Baule-Escoublac | ≈ 6 µg/m³ |
| Bouguenais | ≈ 6 µg/m³ |
| Guérande | ≈ 6 µg/m³ |
| Fontenay-le-Comte | ≈ 6 µg/m³ |
| Les Sables-d'Olonne | ≈ 7 µg/m³ |
| Les Herbiers | ≈ 6 µg/m³ |
| Mayenne | ≈ 5 µg/m³ |
Bad-air episodes in Pays de la Loire
- Europe, 8 to 27 January 202420 days519 cities244 µg/m³peak, Czechowice-Dziedzice
- Western Europe, January 202414 to 16 January 2024, 3 days131 cities60 µg/m³peak, Manlleu
- France, Spain and Germany, December 202316 to 19 December 2023, 4 days36 cities71 µg/m³peak, Manlleu
- France, Belgium and 2 more countries, November and December 202330 November to 2 December 2023, 3 days49 cities53 µg/m³peak, Cork
- France, November 202326 November 2023, 1 day8 cities38 µg/m³peak, Lormont
- France, Belgium and Germany, April 202317 to 18 April 2023, 2 days43 cities33 µg/m³peak, Dreux
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
Updated 2026-10-07 00:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.