| Rank | Location | Max recorded PM2.5 | |
|---|---|---|---|
| 1 | Achill Island, Co. Mayo | 55μg/m3 | |
| 2 | Enniscorthy, Co. Wexford | 51μg/m3 | |
| 3 | Buncranna, Co. Donegal | 46μg/m3 | |
| 4 | Tralee Library, Co. Kerry | 41μg/m3 | |
| 5 | Mountrath, Co. Laois | 34μg/m3 | |
| 6 | Edenderry Library, Co. Offaly | 31μg/m3 | 3 |
| 7 | Sandymount Green, Dublin 4 | 30μg/m3 | 2 |
| 8 | Abbeyfeale, Limerick | 27μg/m3 | |
| 9 | Athlone Civic Centre & Library, Co. Westmeath | 23μg/m3 | 5 |
| 10 | Mungret, Co. Limerick | 23μg/m3 |