SmogRank / Countries / Spain / September 2026

Most polluted cities in Spain, September 2026

66 cities in Spain ranked by their average PM2.5 over the 30 days. Worst: Alcalá de Guadaira at 17.7 µg/m³, #197 of 2,332 cities in the world. Cleanest: Alicante at 2.6. A city needs measurements on 70% of the days to be ranked.

  1. 1Alcalá de GuadairaAndalusia
    17.7
  2. 2SevillaAndalusia
    16.1
  3. 3HuelvaAndalusia
    15.6
  4. 4ArrecifeCanary Islands
    13.7
  5. 5ManlleuCatalonia
    12.9
  6. 6CandelariaCanary Islands
    12.3
  7. 7BailénAndalusia
    11.7
  8. 8FuenlabradaMadrid
    11.5
  9. 9ValdemoroMadrid
    11.1
  10. 10GijónAsturias
    10.8
  11. 11DurangoBasque Country
    10.6
  12. 11AvilésAsturias
    10.6
  13. 13MurciaMurcia
    10.3
  14. 13Barrio de PeralMurcia
    10.3
  15. 13AlcantarillaMurcia
    10.3
  16. 13Gasteiz / VitoriaBasque Country
    10.3
  17. 13VigoGalicia
    10.3
  18. 18BurrianaValencia
    10.2
  19. 19ZaragozaAragon
    10.0
  20. 19Torrejón de ArdozMadrid
    10.0
  21. 21San RoqueAndalusia
    9.8
  22. 21GranadaAndalusia
    9.8
  23. 23MadridMadrid
    9.7
  24. 23A CoruñaGalicia
    9.7
  25. 25OriaBasque Country
    9.6
  26. 26BilbaoBasque Country
    9.5
  27. 27ZarautzBasque Country
    9.3
  28. 27Laudio / LlodioBasque Country
    9.3
  29. 29ValenciaValencia
    9.2
  30. 29Santiago de CompostelaGalicia
    9.2
  31. 31AmorebietaBasque Country
    9.0
  32. 32LorcaMurcia
    8.8
  33. 32CosladaMadrid
    8.8
  34. 34ManzanaresCastille-La Mancha
    8.7
  35. 35La Línea de la ConcepciónAndalusia
    8.6
  36. 36Molina de SeguraMurcia
    8.5
  37. 37Alcalá de HenaresMadrid
    8.4
  38. 38JaénAndalusia
    8.2
  39. 38CartagenaMurcia
    8.2
  40. 40JumillaMurcia
    8.1
  41. 40AlgecirasAndalusia
    8.1
  42. 40TolosaBasque Country
    8.1
  43. 43GetxoBasque Country
    7.9
  44. 44HernaniBasque Country
    7.8
  45. 45CaravacaMurcia
    7.7
  46. 45Donostia / San SebastiánBasque Country
    7.7
  47. 47Los BarriosAndalusia
    7.1
  48. 47SanturtziBasque Country
    7.1
  49. 49SaguntoValencia
    6.8
  50. 50LugoGalicia
    6.4
  51. 51OviedoAsturias
    6.3
  52. 52CulleredoGalicia
    6.2
  53. 53SalouCatalonia
    5.9
  54. 53FerrolGalicia
    5.9
  55. 55BermeoBasque Country
    5.5
  56. 56Grao de MurviedroValencia
    5.2
  57. 56SamaAsturias
    5.2
  58. 58AlgeteMadrid
    4.9
  59. 59Castelló de la PlanaValencia
    4.8
  60. 60TorreviejaValencia
    4.6
  61. 60EldaValencia
    4.6
  62. 60BenicàssimValencia
    4.6
  63. 63AlmeríaAndalusia
    4.5
  64. 64PontevedraGalicia
    3.7
  65. 65Collado-VillalbaMadrid
    2.8
  66. 66AlicanteValencia
    2.6
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2026 · Spain now