Air quality in Limerick, Ireland today
Mr. Duck’s Air Quality Score
Good air today for Limerick, Ireland
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Limerick is currently classified as Good. The primary pollutant measured today is PM2.5, with a reference concentration of 3.4 µg/m³. In addition, the PM10 level is recorded at 4.5 µg/m³ based on eight valid observations.
Data are shown via OpenAQ and reflect the latest available measurements for the city. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.
Latest sensor values
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
What the data includes
The dataset for Limerick draws from three monitoring sites and contains nine recent records across the four key pollutants tracked by OpenAQ – nitrogen dioxide (NO2), ozone (O3), particulate matter ≤10 µm (PM10) and particulate matter ≤2.5 µm (PM2.5). All of the latest observations were recorded on 2026‑02‑10 at 13:00 UTC, so each pollutant’s most recent value is less than three days old.
For PM2.5 the median concentration sits at 3.16 µg/m³ with values ranging from a low of 0.0 to a high of 3.4 µg/m³; the 10th‑percentile is about 0.63 and the 90th‑percentile reaches 3.35, indicating that most recent readings cluster tightly around the median. NO2 shows a narrower spread: measurements vary between 15.47 and 19.09 µg/m³, with a median of 17.28 µg/m³ and the inter‑decile range (15.83–18.73 µg/m³) covering most of the data. Ozone values are similarly compact, ranging from 47.11 to 50.27 µg/m³, median 48.69 µg/m³, with the 10th and 90th percentiles at 47.43 and 49.95 µg/m³ respectively. PM10 is the most consistent of all, recorded between 4.39 and 4.5 µg/m³; the median (4.445 µg/m³) sits almost exactly in the middle of that narrow band.
Overall the coverage is uneven: while every pollutant has at least two recent samples, PM2.5 benefits from three rows, giving a slightly richer picture than the others. All timestamps are fresh, but because the dataset relies on a limited number of stations, conditions can still differ across neighbourhoods and times not captured by these snapshots.
Learn more about sources and filtering: About the data.
Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)
Latest sensor values (bars)
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
Data notes
The data shown for Limerick is based on eight valid measurements and was refreshed within three days, with the latest update recorded at 2026‑02‑10T13:00:00+00:00. This snapshot reflects conditions at the time of collection; air quality can vary across different parts of the city and change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Castleroy College | pm25 | 0.0 | µg/m³ | 2025-03-27 08:57 UTC |
| Limerick Henry Street | no2 | 19.09 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Henry Street | o3 | 50.27 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Henry Street | pm10 | 4.39 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Henry Street | pm25 | 3.16 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Peoples Park | no2 | 15.47 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Peoples Park | o3 | 47.11 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Peoples Park | pm10 | 4.5 | µg/m³ | 2026-02-10 13:00 UTC |
| Limerick Peoples Park | pm25 | 3.4 | µg/m³ | 2026-02-10 13:00 UTC |