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 to9 Jan 2026 That day's board

The worst cities in Spain for PM2.5 over the 30 days to 9 Jan 2026: Molina de Segura 23.9 µg/m³, Murcia 23.3 µg/m³ and Ourense 23.3 µg/m³.

  1. 1Molina de SeguraMurcia23.9
  2. 2MurciaMurcia23.3
  3. 3OurenseGalicia23.3
  4. 4GijónAsturias23.3
  5. 5ManlleuCatalonia22.6
  6. 6LleidaCatalonia19.9
  7. 7Mollet del VallèsCatalonia15.6
  8. 8AlcantarillaMurcia15.1
  9. 9SamaAsturias13.5
  10. 10PonferradaCastille and León12.4
  11. 11GironaCatalonia11.6
  12. 12SalamancaCastille and León11.3
  13. 13HernaniBasque Country11.0
  14. 14PalenciaCastille and León10.9
  15. 15AzpeitiaBasque Country10.8
  16. 16AmorebietaBasque Country10.7
  17. 17JumillaMurcia10.6
  18. 18Santiago de CompostelaGalicia10.6
  19. 19OviedoAsturias10.6
  20. 20BeasainBasque Country10.6

+ 82 more cities, 10.4 µg/m³ and below

Not counted on this day, too few days measured: Vigo since 8 Jan 2026, San Roque since 7 Jan 2026, Los Barrios since 6 Jan 2026 and 5 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.