SmogRank / Countries / Ireland / January 2025

Most polluted cities in Ireland, January 2025

5 cities in Ireland ranked by their average PM2.5 over the 31 days. Worst: Cork at 14.1 µg/m³, #314 of 1,937 cities in the world. Cleanest: Dún Laoghaire at 9.0. A city needs measurements on 70% of the days to be ranked.

  1. 1CorkMunster
    14.1
  2. 2WaterfordMunster
    12.4
  3. 3CarlowLeinster
    11.7
  4. 4DublinLeinster
    9.8
  5. 5Dún LaoghaireLeinster
    9.0
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 2025 · Ireland now

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SmogRank, most polluted cities in Ireland, PM2.5, January 2025, smogrank.com/ie/history/2025-01 (accessed 2 Oct 2026).

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