SmogRank / World / Ireland / April 2023

Most polluted cities in Ireland, April 2023

3 cities in Ireland ranked by their average PM2.5 over the 30 days. Worst: Dún Laoghaire at 8.2 µg/m³, #633 of 1,316 cities in the world. Cleanest: Cork at 6.6. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 3 of these 30 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

← Dún Laoghaire 8.2 µg/m³ 20 µg/m³0
Every city in Ireland ranked for April 2023, 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. 1Dún LaoghaireLeinster
    1
  2. 2DublinLeinster
    1
  3. 3CorkMunster
    1
Low1–3
Moderate4–6
High7–9
Very high10

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. 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, April 2023 · Ireland now

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SmogRank, most polluted cities in Ireland, PM2.5, April 2023, smogrank.com/ie/history/2023-04 (accessed 2 Oct 2026).

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