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 for the last 30 days.
A city joins this ranking with enough days of readings over the last 30 days; none here has that right now, so there is nothing to map or chart.
Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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 | ≈ 7 µg/m³ |
| Saint-Herblain | ≈ 6 µg/m³ |
| Rezé | ≈ 6 µg/m³ |
| Saumur | ≈ 7 µg/m³ |
| Saint-Sébastien-sur-Loire | ≈ 6 µg/m³ |
| Orvault | ≈ 6 µg/m³ |
| Vertou | ≈ 7 µg/m³ |
| Challans | ≈ 7 µg/m³ |
| La Flèche | ≈ 7 µg/m³ |
| La Chapelle-sur-Erdre | ≈ 6 µg/m³ |
| Carquefou | ≈ 6 µg/m³ |
| La Baule-Escoublac | ≈ 7 µg/m³ |
| Bouguenais | ≈ 6 µg/m³ |
| Guérande | ≈ 7 µg/m³ |
| Fontenay-le-Comte | ≈ 7 µg/m³ |
| Les Sables-d'Olonne | ≈ 8 µg/m³ |
| Les Herbiers | ≈ 7 µg/m³ |
| Mayenne | ≈ 7 µg/m³ |
Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the Canada AQHI+ PM2.5 sub-index.