| Rank | Location | Max recorded PM2.5 | |
|---|---|---|---|
| 1 | Carlow Town | 252μg/m3 | |
| 2 | Enniscorthy, Co. Wexford | 116μg/m3 | 1 |
| 3 | Clonskeagh, Dublin 14 | 107μg/m3 | |
| 4 | Tralee Library, Co. Kerry | 79μg/m3 | 5 |
| 5 | Rathmines, Dublin 6 | 74μg/m3 | 5 |
| 6 | Davitt Road, Inchicore, Dublin 12 | 70μg/m3 | |
| 7 | Marino, Dublin 3 | 67μg/m3 | |
| 8 | Amiens Street, Dublin 1 | 63μg/m3 | |
| 9 | Ringsend, Dublin 4 | 61μg/m3 | |
| 10 | Edenderry Library, Co. Offaly | 61μg/m3 | 4 |