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.

CountriesCities
The 30 days to11 Sep 2025 That day's board

The worst cities in Spain for PM2.5 over the 30 days to 11 Sep 2025: Ponferrada 38.8 µg/m³, León 21.6 µg/m³ and Santa Lucía 21.5 µg/m³.

  1. 1PonferradaCastille and León38.8
  2. 2LeónCastille and León21.6
  3. 3Santa LucíaCanary Islands21.5
  4. 4OurenseGalicia20.6
  5. 5LorcaMurcia19.7
  6. 6SarriaGalicia19.0
  7. 7JaénAndalusia18.8
  8. 8ManzanaresCastille-La Mancha18.4
  9. 9JumillaMurcia17.7
  10. 10FuenlabradaMadrid17.6
  11. 11MóstolesMadrid17.2
  12. 12LogroñoLa Rioja17.0
  13. 13AlcantarillaMurcia16.7
  14. 14MurciaMurcia16.5
  15. 15ValdemoroMadrid16.1
  16. 16Molina de SeguraMurcia15.8
  17. 17El PlanMurcia15.4
  18. 18Barrio de PeralMurcia15.4
  19. 19ValenciaValencia14.8
  20. 20Mollet del VallèsCatalonia14.8

+ 79 more cities, 14.8 µg/m³ and below

Not counted on this day, too few days measured: Sevilla since 11 Sep 2025, Huelva since 27 Aug 2025, Beasain since 11 Aug 2025 and 3 more cities.

30 days7 days
GoodModerateSensitive groupsUnhealthyVery unhealthyHazardousWHO 24-hour guideline, 15 µg/m³Fades where it stood: not counted that 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.