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 to10 Nov 2025 That day's board

The worst cities in Spain for PM2.5 over the 30 days to 10 Nov 2025: Ourense 16.1 µg/m³, Gijón 15.0 µg/m³ and Logroño 14.5 µg/m³.

  1. 1OurenseGalicia16.1
  2. 2GijónAsturias15.0
  3. 3LogroñoLa Rioja14.5
  4. 4ManlleuCatalonia12.6
  5. 5LleidaCatalonia10.4
  6. 6Collado-VillalbaMadrid10.4
  7. 7Mollet del VallèsCatalonia10.3
  8. 8MurciaMurcia10.0
  9. 9AvilésAsturias9.4
  10. 10BurrianaValencia9.0
  11. 11BeasainBasque Country8.7
  12. 12MaspalomasCanary Islands8.5
  13. 13IngenioCanary Islands8.4
  14. 14AlcantarillaMurcia8.4
  15. 15SamaAsturias8.4
  16. 16OviedoAsturias8.4
  17. 17Torrejón de ArdozMadrid8.3
  18. 18ArucasCanary Islands8.2
  19. 19PalenciaCastille and León8.1
  20. 20OriaBasque Country8.1

+ 85 more cities, 8.0 µg/m³ and below

Not counted on this day, too few days measured: Zumarraga since 7 Nov 2025, Zalla since 7 Nov 2025, San Roque since 15 Oct 2025 and 9 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.