SmogRank / History / City race
Cities in Spain, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Spain for PM2.5 over the 30 days to 16 Jun 2025: Ourense 18.6 µg/m³, Mollet del Vallès 15.4 µg/m³ and Valencia 13.7 µg/m³.
- 1OurenseGalicia18.6
- 2Mollet del VallèsCatalonia15.4
- 3ValenciaValencia13.7
- 4ManlleuCatalonia13.6
- 5MurciaMurcia13.4
- 6El PlanMurcia13.4
- 7Barrio de PeralMurcia13.4
- 8CosladaMadrid12.8
- 9OriaBasque Country12.6
- 10AlcantarillaMurcia12.2
- 11GijónAsturias12.2
- 12LorcaMurcia12.0
- 13MaspalomasCanary Islands11.9
- 14CartagenaMurcia11.9
- 15SaguntoValencia11.4
- 16Molina de SeguraMurcia11.1
- 17San IldefonsoCastille and León11.0
- 18BilbaoBasque Country11.0
- 19BeasainBasque Country11.0
- 20Laudio / LlodioBasque Country10.9
+ 66 more cities, the next at 10.8 µg/m³
Not counted on this day, too few days measured: Zumarraga since 15 Jun 2025, Móstoles since 15 Jun 2025, Alcalá de Henares since 15 Jun 2025 and 13 more cities.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites. We are building the reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.