SmogRank / World / United Kingdom / January 2026

Most polluted cities in United Kingdom, January 2026

60 cities in United Kingdom ranked by their average PM2.5 over the 31 days. Worst: Northampton at 13.9 µg/m³, #530 of 2,041 cities in the world. Cleanest: Newton Abbot at 3.8. A city needs measurements on 70% of the days to be ranked.

← Northampton 13.9
Every city in United Kingdom ranked for January 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1NorthamptonEngland
    13.9
  2. 2ScunthorpeEngland
    12.9
  3. 3LeedsEngland
    12.5
  4. 4SunderlandEngland
    12.0
  5. 5Kingston upon HullEngland
    11.8
  6. 6YorkEngland
    11.5
  7. 7Newcastle upon TyneEngland
    11.0
  8. 8DoncasterEngland
    10.9
  9. 9LondonEngland
    10.5
  10. 10Cambridgelow-cost sensorsEngland
    10.4
  11. 11NorwichEngland
    10.3
  12. 11BarnsleyEngland
    10.3
  13. 13WiganEngland
    10.0
  14. 14NottinghamEngland
    9.9
  15. 15DartfordEngland
    9.7
  16. 16SheffieldEngland
    9.5
  17. 16Manchesterlow-cost sensorsEngland
    9.5
  18. 18DerbyEngland
    9.4
  19. 19ChesterfieldEngland
    9.3
  20. 20LeicesterEngland
    9.1
  21. 20HayesEngland
    9.1
  22. 20CardiffWales
    9.1
  23. 20BexleyEngland
    9.1
  24. 24LutonEngland
    8.8
  25. 25Stoke-on-TrentEngland
    8.7
  26. 26Clacton-on-SeaEngland
    8.6
  27. 26Canvey IslandEngland
    8.6
  28. 28GillinghamEngland
    8.5
  29. 29PlymouthEngland
    8.4
  30. 30Birminghamlow-cost sensorsEngland
    8.3
  31. 31BristolEngland
    8.1
  32. 31BrightonEngland
    8.1
  33. 33NewmarketEngland
    8.0
  34. 33GrangemouthScotland
    8.0
  35. 35SouthamptonEngland
    7.8
  36. 35ReadingEngland
    7.8
  37. 35Cheadle HulmeEngland
    7.8
  38. 35BelfastNorthern Ireland
    7.8
  39. 39Royal Leamington SpaEngland
    7.7
  40. 40MiddlesbroughEngland
    7.6
  41. 40LiverpoolEngland
    7.6
  42. 40CannockEngland
    7.6
  43. 43PrestonEngland
    7.5
  44. 44SpekeEngland
    7.4
  45. 45DerryNorthern Ireland
    7.3
  46. 45IrlamEngland
    7.3
  47. 47PortsmouthEngland
    6.9
  48. 48Westburylow-cost sensorsEngland
    6.8
  49. 49NewportWales
    6.7
  50. 50OxfordEngland
    6.6
  51. 51SeafordEngland
    6.5
  52. 51GlasgowScotland
    6.5
  53. 51EdinburghScotland
    6.5
  54. 54SaltashEngland
    6.1
  55. 55High PeakEngland
    5.7
  56. 56AndoverEngland
    5.5
  57. 57BarnstapleEngland
    5.1
  58. 58PenicuikScotland
    4.5
  59. 59Briton FerryWales
    4.3
  60. 60Newton AbbotEngland
    3.8
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, January 2026 · United Kingdom now

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SmogRank, most polluted cities in United Kingdom, PM2.5, January 2026, smogrank.com/gb/history/2026-01 (accessed 2 Oct 2026).

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