SmogRank / World / Europe / Spain / Catalonia
Most polluted cities in Catalonia, Spain
2 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Manlleu at 11.4 µg/m³, #504 in the world.
26 monitors in Spain stopped reporting on 6 Oct, 05:00 Madrid time. Cities that rely on them are missing from the 24-hour board and may drop from the longer ones; that isn't clean air, and they return when the data does.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
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
Catalonia 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 |
|---|---|
| L'Hospitalet de Llobregat | ≈ 10 µg/m³ |
| Badalona | ≈ 10 µg/m³ |
| Sabadell | ≈ 10 µg/m³ |
| Santa Coloma de Gramenet | ≈ 10 µg/m³ |
| Cornellà de Llobregat | ≈ 10 µg/m³ |
| Sant Boi de Llobregat | ≈ 10 µg/m³ |
| Sant Cugat del Vallès | ≈ 10 µg/m³ |
| Rubí | ≈ 10 µg/m³ |
| Castelldefels | ≈ 9 µg/m³ |
| Viladecans | ≈ 10 µg/m³ |
| El Prat de Llobregat | ≈ 10 µg/m³ |
| Cerdanyola del Vallès | ≈ 10 µg/m³ |
| Figueres | ≈ 6 µg/m³ |
| Esplugues de Llobregat | ≈ 10 µg/m³ |
| Gavà | ≈ 10 µg/m³ |
| Llefià | ≈ 10 µg/m³ |
| Sant Feliu de Llobregat | ≈ 10 µg/m³ |
| Blanes | ≈ 10 µg/m³ |
| Vic | ≈ 6 µg/m³ |
| Ripollet | ≈ 10 µg/m³ |
| Lloret de Mar | ≈ 10 µg/m³ |
| Sant Adrià de Besòs | ≈ 10 µg/m³ |
| El Vendrell | ≈ 8 µg/m³ |
| Tortosa | ≈ 5 µg/m³ |
| Olot | ≈ 6 µg/m³ |
| Montcada i Reixac | ≈ 10 µg/m³ |
| Cambrils | ≈ 7 µg/m³ |
| Sant Joan Despí | ≈ 10 µg/m³ |
| Barberà del Vallès | ≈ 10 µg/m³ |
| Salt | ≈ 7 µg/m³ |
| Sant Pere de Ribes | ≈ 8 µg/m³ |
| Sant Vicenç dels Horts | ≈ 10 µg/m³ |
| Sitges | ≈ 9 µg/m³ |
| Premià de Mar | ≈ 10 µg/m³ |
| Pineda de Mar | ≈ 10 µg/m³ |
| Sant Andreu de la Barca | ≈ 10 µg/m³ |
| Valls | ≈ 7 µg/m³ |
| Santa Perpètua de Mogoda | ≈ 10 µg/m³ |
| Calafell | ≈ 8 µg/m³ |
| Molins de Rei | ≈ 10 µg/m³ |
Bad-air episodes in Catalonia
- North-eastern Spain and France, January 202614 January 2026, 1 day8 cities53 µg/m³peak, Manlleu
- North-eastern Spain and Andorra, November 202514 November 2025, 1 day13 cities65 µg/m³peak, Elda
- Spain, Portugal and Andorra, August 202510 to 22 August 2025, 13 days57 cities203 µg/m³peak, Ponferrada
- North-eastern Spain, June 202514 June 2025, 1 day14 cities31 µg/m³peak, Murcia
- Europe, 14 February to 1 March 202516 days619 cities178 µg/m³peak, Krotoszyn
- Europe, 1 to 14 February 202514 days628 cities179 µg/m³peak, Banja Luka
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 Catalonia, Spain, PM2.5, last 30 days to 6 Oct 2026, 23:00 UTC, smogrank.com/es/region/catalonia?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 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.