SmogRank / Countries / France / Pays de la Loire
Most polluted cities in Pays de la Loire, France
0 measured cities, this year.
No city has enough measurements for this window yet.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
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 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.