SmogRank / World / Ireland / March 2026

Most polluted cities in Ireland, March 2026

10 cities in Ireland ranked by their average PM2.5 over the 31 days. Worst: Wexford at 13.0 µg/m³, #1,006 of 2,616 cities in the world. Cleanest: Greystones at 8.5. A city needs measurements on 70% of the days to be ranked.

← Wexford 13.0 µg/m³ 20 µg/m³0
Every city in Ireland ranked for March 2026, 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. 1WexfordLeinster
    58
  2. 2TraleeMunster
    57
  3. 3AthloneLeinster
    55
  4. 4DublinLeinster
    52
  5. 4CarlowLeinster
    52
  6. 6NaasLeinster
    52
  7. 7DroghedaLeinster
    51
  8. 8LeixlipLeinster
    50
  9. 9Cluain MealaMunster
    49
  10. 10GreystonesLeinster
    47
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, March 2026 · Ireland now

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SmogRank, most polluted cities in Ireland, PM2.5, March 2026, smogrank.com/ie/history/2026-03 (accessed 2 Oct 2026).

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