SmogRank / World / Europe / France / Hauts-de-France
Most polluted cities in Hauts-de-France, France
13 measured cities, this year; 13 above the WHO annual guideline. Worst: Dunkirk at 10.8 µg/m³, #845 in the world.
About 6.17K people in these 3 cities breathed unhealthy air on an average day so far this year.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
Cities coloured by their PM2.5 over the last 24 hours. Fires, smoke and ash: Oct 5, the newest UTC day mapped.
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
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.
| City | 7-day estimate |
|---|---|
| Tourcoing | ≈ 10 µg/m³ |
| Villeneuve-d'Ascq | ≈ 10 µg/m³ |
| Compiègne | ≈ 7 µg/m³ |
| Wattrelos | ≈ 10 µg/m³ |
| Marcq-en-Barœul | ≈ 10 µg/m³ |
| Lens | ≈ 9 µg/m³ |
| Cambrai | ≈ 7 µg/m³ |
| Liévin | ≈ 9 µg/m³ |
| Maubeuge | ≈ 7 µg/m³ |
| Soissons | ≈ 6 µg/m³ |
| Lomme | ≈ 9 µg/m³ |
| Laon | ≈ 6 µg/m³ |
| Lambersart | ≈ 9 µg/m³ |
| Armentières | ≈ 9 µg/m³ |
| Abbeville | ≈ 7 µg/m³ |
| Hénin-Beaumont | ≈ 9 µg/m³ |
| Coudekerque-Branche | ≈ 8 µg/m³ |
| Bruay-la-Buissière | ≈ 8 µg/m³ |
| Saint-Pol-sur-Mer | ≈ 8 µg/m³ |
| La Madeleine | ≈ 9 µg/m³ |
| Hazebrouck | ≈ 8 µg/m³ |
| Grande-Synthe | ≈ 8 µg/m³ |
| Mons-en-Barœul | ≈ 10 µg/m³ |
| Loos | ≈ 9 µg/m³ |
| Croix | ≈ 10 µg/m³ |
| Halluin | ≈ 10 µg/m³ |
| Hem | ≈ 10 µg/m³ |
| Nogent-sur-Oise | ≈ 7 µg/m³ |
| Wasquehal | ≈ 10 µg/m³ |
| Senlis | ≈ 7 µg/m³ |
| Carvin | ≈ 9 µg/m³ |
| Avion | ≈ 9 µg/m³ |
| Ronchin | ≈ 8 µg/m³ |
| Saint-Omer | ≈ 8 µg/m³ |
| Saint-Amand-les-Eaux | ≈ 8 µg/m³ |
| Sin-le-Noble | ≈ 9 µg/m³ |
| Faches-Thumesnil | ≈ 8 µg/m³ |
| Château-Thierry | ≈ 6 µg/m³ |
| Haubourdin | ≈ 9 µg/m³ |
| Crépy-en-Valois | ≈ 7 µg/m³ |
Bad-air episodes in Hauts-de-France
- Belgium, France and 2 more countries, June 202625 June 2026, 1 day15 cities39 µg/m³peak, Unna
- Europe, 18 to 25 March 20268 days430 cities136 µg/m³peak, Łask
- Europe, 1 to 12 March 202612 days532 cities109 µg/m³peak, Radomsko
- Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
- Europe, December 2025 to January 202625 December 2025 to 2 January 2026, 9 days189 cities110 µg/m³peak, Kempten (Allgäu)
- Europe, 22 to 23 November 20252 days59 cities74 µg/m³peak, Żary
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
Use this board
SmogRank, most polluted cities in Hauts-de-France, France, PM2.5, this year to 7 Oct 2026, 00:00 UTC, smogrank.com/fr/region/hauts-de-france?w=year.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
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.