Ireland AQI Analytics

OpenAQ-derived PM2.5 and PM10 history for 20 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.

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City

The highest average AQI in this pilot slice is Limerick, with an EPA AQI average of 49 and PM2.5 around 12.2 ug/m3. Its worst month is January.

Source: OpenAQ local parquet plus raw CSV coordinate recovery. Build 2026-05-12T00:27:56.105574+00:00.

Country average

US EPA scale

PM2.5 8.4 ug/m3 · PM10 12.2 ug/m3

Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI.

20 eligible cities

Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.

20 eligible cities

Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.

16 eligible cities

City	Avg AQI	PM2.5	Worst month	Trend	Coverage
Limerick Limerick, Ireland	49	12.2 ug/m3	January	n/a	320 days · 2 locations
Enniscorthy Wexford, Ireland	47	10.0 ug/m3	November	n/a	102 days · 1 locations
Douglas Cork, Ireland	46	10.6 ug/m3	March	n/a	70 days · 2 locations
Trim Meath, Ireland	45	10.9 ug/m3	November	n/a	195 days · 1 locations
Finglas Dublin, Ireland	42	8.8 ug/m3	March	n/a	69 days · 1 locations
Sligo Sligo, Ireland	41	9.2 ug/m3	November	n/a	261 days · 1 locations
Dublin Leinster, Ireland	39	8.3 ug/m3	November	n/a	250 days · 2 locations
Dunleary Dún Laoghaire-Rathdown, Ireland	38	7.7 ug/m3	March	n/a	287 days · 1 locations
Ballyfermot Dublin, Ireland	37	7.7 ug/m3	November	n/a	339 days · 3 locations
Dublin Dublin, Ireland	37	7.6 ug/m3	November	n/a	319 days · 4 locations
Baile an Bhiataigh Meath, Ireland	36	8.2 ug/m3	May	n/a	345 days · 2 locations
Carlow Carlow, Ireland	34	6.8 ug/m3	March	n/a	274 days · 2 locations
Waterford Waterford, Ireland	33	6.7 ug/m3	March	n/a	289 days · 1 locations
Cork Munster, Ireland	32	6.5 ug/m3	November	n/a	297 days · 5 locations
Ros Comáin Roscommon, Ireland	28	5.6 ug/m3	November	n/a	202 days · 1 locations
Palmerston Fingal, Ireland	18	8.3 ug/m3	March	n/a	324 days · 3 locations
Castlebar Mayo, Ireland	12	n/a ug/m3	January	n/a	313 days · 1 locations
Dún Dealgan Louth, Ireland	11	n/a ug/m3	November	n/a	262 days · 1 locations
Port Laoise Laois, Ireland	10	n/a ug/m3	November	n/a	323 days · 2 locations
Tallaght South Dublin, Ireland	9	n/a ug/m3	September	n/a	334 days · 3 locations