SmogRank / World / Europe / France / Île-de-France
Most polluted cities in Île-de-France, France
6 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Paris at 7.7 µg/m³, #1,054 in the world.
About 0 people in this city breathed unhealthy air on an average day over the last 30 days.
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.
- 1Paris 0
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
Île-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 |
|---|---|
| Marne La Vallée | ≈ 7 µg/m³ |
| Paris 15 Vaugirard | ≈ 8 µg/m³ |
| Paris 20 Ménilmontant | ≈ 8 µg/m³ |
| Cergy-Pontoise | ≈ 7 µg/m³ |
| Paris 18 Buttes-Montmartre | ≈ 8 µg/m³ |
| Paris 13 Gobelins | ≈ 8 µg/m³ |
| Paris 19 Buttes-Chaumont | ≈ 8 µg/m³ |
| Paris 16 Passy | ≈ 8 µg/m³ |
| Paris 17 Batignolles-Monceau | ≈ 8 µg/m³ |
| Saint-Quentin-en-Yvelines | ≈ 7 µg/m³ |
| Paris 11 Popincourt | ≈ 8 µg/m³ |
| Paris 12 Reuilly | ≈ 8 µg/m³ |
| Paris 14 Observatoire | ≈ 8 µg/m³ |
| Montreuil | ≈ 8 µg/m³ |
| Boulogne-Billancourt | ≈ 8 µg/m³ |
| Argenteuil | ≈ 8 µg/m³ |
| Saint-Denis | ≈ 8 µg/m³ |
| Asnières-sur-Seine | ≈ 8 µg/m³ |
| Nanterre | ≈ 8 µg/m³ |
| Versailles | ≈ 7 µg/m³ |
| Courbevoie | ≈ 8 µg/m³ |
| Créteil | ≈ 8 µg/m³ |
| Paris 10 Entrepôt | ≈ 8 µg/m³ |
| Colombes | ≈ 8 µg/m³ |
| Vitry-sur-Seine | ≈ 8 µg/m³ |
| Aulnay-sous-Bois | ≈ 8 µg/m³ |
| Champigny-sur-Marne | ≈ 8 µg/m³ |
| Rueil-Malmaison | ≈ 7 µg/m³ |
| Gare | ≈ 8 µg/m³ |
| Saint-Maur-des-Fossés | ≈ 8 µg/m³ |
| Aubervilliers | ≈ 8 µg/m³ |
| Maison Blanche | ≈ 8 µg/m³ |
| Drancy | ≈ 8 µg/m³ |
| Noisy-le-Grand | ≈ 8 µg/m³ |
| Levallois-Perret | ≈ 8 µg/m³ |
| Issy-les-Moulineaux | ≈ 8 µg/m³ |
| Neuilly-sur-Seine | ≈ 8 µg/m³ |
| Antony | ≈ 8 µg/m³ |
| Ivry-sur-Seine | ≈ 8 µg/m³ |
| Cergy | ≈ 7 µg/m³ |
Bad-air episodes in Île-de-France
- 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
- France, January 20264 January 2026, 1 day10 cities33 µg/m³peak, Tours
- 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 Île-de-France, France, PM2.5, last 30 days to 7 Oct 2026, 00:00 UTC, smogrank.com/fr/region/ile-de-france?w=30d.
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.