SmogRank / World / Ireland / August 2025

Most polluted cities in Ireland, August 2025

18 cities in Ireland ranked by their average PM2.5 over the 31 days. Worst: Ennis at 8.4 µg/m³, #1,492 of 2,503 cities in the world. Cleanest: Greystones at 5.7. A city needs measurements on 70% of the days to be ranked.

← Ennis 8.4
Every city in Ireland ranked for August 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1EnnisMunster
    47
  2. 2SligoConnacht
    44
  3. 3TraleeMunster
    43
  4. 4LimerickMunster
    42
  5. 4GalwayConnacht
    42
  6. 6CorkMunster
    42
  7. 7WaterfordMunster
    41
  8. 8DublinLeinster
    39
  9. 8AthloneLeinster
    39
  10. 10PortlaoiseLeinster
    39
  11. 11DroghedaLeinster
    38
  12. 12Dún LaoghaireLeinster
    38
  13. 13WexfordLeinster
    37
  14. 14LetterkennyUlster
    37
  15. 15LeixlipLeinster
    36
  16. 16NaasLeinster
    35
  17. 17Cluain MealaMunster
    33
  18. 18GreystonesLeinster
    32
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, August 2025 · Ireland now

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SmogRank, most polluted cities in Ireland, PM2.5, August 2025, smogrank.com/ie/history/2025-08 (accessed 2 Oct 2026).

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