SmogRank / World / Europe / France / Centre-Val de Loire

Most polluted cities in Centre-Val de Loire, France

10 measured cities, this year; 10 above the WHO annual guideline. Worst: Orléans at 8.1 µg/m³, #1,668 in the world.

Île-de-France: 6 measured citiesCentre-Val de Loire: 10 measured citiesBourgogne-Franche-Comté: 4 measured citiesNormandy: 9 measured citiesHauts-de-France: 13 measured citiesGrand Est: 9 measured citiesPays de la LoireNew Aquitaine: 9 measured citiesAuvergne-Rhône-Alpes: 18 measured cities#9 Olivet: 6.8 µg/m³#10 Châteauroux: 6.8 µg/m³#8 Blois: 6.9 µg/m³#5 Tours: 7.0 µg/m³#6 Joué-lès-Tours: 7.0 µg/m³#7 Bourges: 7.0 µg/m³#4 Montargis: 7.6 µg/m³#3 Dreux: 7.7 µg/m³#2 Chartres: 7.9 µg/m³#1 Orléans: 8.1 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Orléans 8.1 WHO annual guideline
Every measured city in Centre-Val de Loire, France, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Orléans 451.6×▼269
  2. 2Chartres 441.6×▼282
  3. 3Dreux 431.5×▼281
  4. 4Montargis 421.5×▼278
  5. 5Tours 391.4×▼312
  6. 6Joué-lès-Tours 391.4×▼310
  7. 7Bourges 391.4×▼284
  8. 8Blois 381.4×▼288
  9. 9Olivet 381.4×▼291
  10. 10Châteauroux 381.4×▼288
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

Estimated: cities without a monitor

Centre-Val de 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.

City7-day estimateBand
Vierzon≈ 6 µg/m³Good
Fleury-les-Aubrais≈ 7 µg/m³Good
Romorantin-Lanthenay≈ 6 µg/m³Good
Saint-Jean-de-Braye≈ 7 µg/m³Good
Vendôme≈ 7 µg/m³Good
Lucé≈ 8 µg/m³Good
Saint-Jean-de-la-Ruelle≈ 7 µg/m³Good
Saint-Cyr-sur-Loire≈ 7 µg/m³Good
Saran≈ 7 µg/m³Good
Saint-Avertin≈ 6 µg/m³Good
Châteaudun≈ 7 µg/m³Good
Gien≈ 7 µg/m³Good
Saint-Pierre-des-Corps≈ 6 µg/m³Good

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SmogRank, most polluted cities in Centre-Val de Loire, France, PM2.5, this year to 2 Oct 2026, 04:00 UTC, smogrank.com/fr/region/centre-val-de-loire?w=year.

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Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.