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 13 Jul 2025: Ourense 18.1 µg/m³, Manlleu 16.1 µg/m³ and Coslada 15.8 µg/m³.
- 1OurenseGalicia18.1
- 2ManlleuCatalonia16.1
- 3CosladaMadrid15.8
- 4Mollet del VallèsCatalonia15.4
- 5ValenciaValencia14.9
- 6MurciaMurcia14.7
- 7LorcaMurcia14.7
- 8LleidaCatalonia14.5
- 9AlcantarillaMurcia14.4
- 10ZumarragaBasque Country14.3
- 11El PlanMurcia14.2
- 12Barrio de PeralMurcia14.2
- 13BurgosCastille and León13.9
- 14BarcelonaCatalonia13.5
- 15CandelariaCanary Islands13.3
- 16ValdemoroMadrid13.3
- 17Torrejón de ArdozMadrid13.3
- 18CartagenaMurcia13.2
- 19Molina de SeguraMurcia13.0
- 20TorreviejaValencia12.8
+ 82 more cities, 12.8 µg/m³ and below
Not counted on this day, too few days measured: Sama since 27 Jun 2025, Oviedo since 27 Jun 2025, Gijón since 17 Jun 2025 and 7 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 readers for them. Most cities there are missing from this board, not clean. Why.