SmogRank / Countries / France / Hauts-de-France

Most polluted cities in Hauts-de-France, France

11 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Valenciennes at 7.8 µg/m³, #589 in the world.

11 good

  1. 1Valenciennes 7.80.5×
  2. 2Saint-Quentin 6.10.4×
  3. 3Denain 5.90.4×
  4. 4Roubaix 5.60.4×
  5. 5Creil 5.50.4×
  6. 6Dunkirk 5.30.4×
  7. 7Douai 5.10.3×
  8. 8Lille 4.90.3×
  9. 9Boulogne-sur-Mer 4.50.3×
  10. 10Calais 4.30.3×
  11. 11Arras 4.00.3×
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

Hauts-de-France 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
Tourcoing≈ 10 µg/m³Moderate
Villeneuve-d'Ascq≈ 10 µg/m³Moderate
Compiègne≈ 8 µg/m³Good
Wattrelos≈ 10 µg/m³Moderate
Marcq-en-Barœul≈ 10 µg/m³Moderate
Cambrai≈ 8 µg/m³Good
Liévin≈ 9 µg/m³Good
Maubeuge≈ 7 µg/m³Good
Soissons≈ 8 µg/m³Good
Lomme≈ 10 µg/m³Moderate
Laon≈ 8 µg/m³Good
Lambersart≈ 10 µg/m³Moderate
Armentières≈ 10 µg/m³Moderate
Abbeville≈ 8 µg/m³Good
Hénin-Beaumont≈ 9 µg/m³Good
Coudekerque-Branche≈ 11 µg/m³Moderate
Bruay-la-Buissière≈ 9 µg/m³Good
Saint-Pol-sur-Mer≈ 11 µg/m³Moderate
La Madeleine≈ 10 µg/m³Moderate
Hazebrouck≈ 10 µg/m³Moderate
Grande-Synthe≈ 11 µg/m³Moderate
Mons-en-Barœul≈ 10 µg/m³Moderate
Loos≈ 10 µg/m³Moderate
Croix≈ 10 µg/m³Moderate
Halluin≈ 10 µg/m³Moderate
Hem≈ 10 µg/m³Moderate
Nogent-sur-Oise≈ 10 µg/m³Moderate
Wasquehal≈ 10 µg/m³Moderate
Senlis≈ 10 µg/m³Moderate
Carvin≈ 9 µg/m³Good
Avion≈ 9 µg/m³Good
Ronchin≈ 9 µg/m³Moderate
Saint-Omer≈ 10 µg/m³Moderate
Saint-Amand-les-Eaux≈ 8 µg/m³Good
Sin-le-Noble≈ 9 µg/m³Moderate
Faches-Thumesnil≈ 9 µg/m³Moderate
Château-Thierry≈ 8 µg/m³Good
Haubourdin≈ 10 µg/m³Moderate
Crépy-en-Valois≈ 10 µg/m³Moderate
Berck-Plage≈ 8 µg/m³Good

Updated 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.