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 µg/m³ 20 µg/m³0
Every city in Ireland ranked for August 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1EnnisMunster
    8.4
  2. 2SligoConnacht
    8.0
  3. 3TraleeMunster
    7.7
  4. 4LimerickMunster
    7.6
  5. 4GalwayConnacht
    7.6
  6. 6CorkMunster
    7.5
  7. 7WaterfordMunster
    7.3
  8. 8DublinLeinster
    7.1
  9. 8AthloneLeinster
    7.1
  10. 10PortlaoiseLeinster
    7.0
  11. 11DroghedaLeinster
    6.9
  12. 12Dún LaoghaireLeinster
    6.8
  13. 13WexfordLeinster
    6.7
  14. 14LetterkennyUlster
    6.6
  15. 15LeixlipLeinster
    6.4
  16. 16NaasLeinster
    6.3
  17. 17Cluain MealaMunster
    6.0
  18. 18GreystonesLeinster
    5.7
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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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