Air quality in Cork, Ireland today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Cork, Ireland

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Cork is classified as “USG”. The primary pollutant identified for today is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 38.0 µg/m³ and a corresponding PM10 reference value of 20.7 µg/m³, based on 21 valid observations.

Data are shown via OpenAQ. 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 Cork contains measurements from seven monitoring sites and a total of thirty individual data rows. All ten pollutants tracked by the OpenAQ feed are represented: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 1 µm (PM₁), PM₁₀, PM₂.₅, relative humidity, sulfur dioxide (SO₂), temperature and ultrafine particle count (UM003). The most recent observations were recorded on 2026‑02‑10, with timestamps ranging from 13:00 UTC for NO₂ and O₃ to 20:00 UTC for PM₁, temperature, relative humidity and UM003, meaning every pollutant has at least one reading that is less than three days old.

Across the city the recorded values show a fairly narrow spread for some variables and a broader range for others. For example, PM₁ measurements vary only between 25.24 µg/m³ and 25.86 µg/m³, with a median of about 25.55 µg/m³, indicating very consistent readings at the University College Cork site. In contrast, O₃ ranges from 2.57 µg/m³ up to 74.12 µg/m³, with a median of 53.74 µg/m³ and a 90th‑percentile near 70 µg/m³, highlighting greater variability across the monitored locations. PM₂.₅ also shows considerable spread, from a low of 3.0 µg/m³ to a high of 38.02 µg/m³, with the median sitting at 14.22 µg/m³.

The coverage is uneven: while PM₁, temperature, relative humidity and UM003 each have data from only two recent rows, pollutants such as NO₂, O₃ and the particulate fractions benefit from three to seven recent entries. No rows are flagged as unknown or extremely old, but a small number of older records (nine) remain in the set, so conditions can still differ by neighbourhood and time of day. Overall, the data give a current snapshot of air quality in Cork, with fresh readings for all pollutants but varying depth of observation across the city’s monitoring network.

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 set for Cork includes 21 valid measurements and is Updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 20:00 UTC. These figures represent a snapshot of current conditions; air quality can differ across neighbourhoods and change throughout the day, so values shown may not reflect every location or moment in the city.

OpenAQ station rows