Air quality in Merléac, Brittany, France today
Mr. Duck’s Air Quality Score
Good air today for Merléac, Brittany, France
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Merléac today is classified as Good. The primary pollutant identified is PM2.5 (fine particles).
According to OpenAQ, four valid measurements were recorded, showing a PM2.5 reference value of 0.5 and a PM10 reference value of 0.8. These figures reflect the current monitoring results for the area.
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 Merléac air‑quality record draws from a single monitoring location, identified as Kergoff, which supplies data for five pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀) and particulate matter ≤ 2.5 µm (PM₂.₅). Because only one row of measurements is available, the dataset does not capture spatial variation across the town; any changes in concentration that occur away from Kergoff are not reflected here.
The timestamps show a mixed picture of data freshness. The most recent update for NO dates back to 2024‑03‑11 09:00 UTC, making it over two years old, while the other four pollutants were last refreshed on 2026‑02‑10 15:00 UTC – less than three days ago. This means that current values for NO₂, O₃, PM₁₀ and PM₂.₅ are relatively up‑to‑date, but the nitrogen monoxide figure may no longer represent present conditions.
All five pollutants have a single reported value, which also serves as their minimum, median and maximum because only one observation exists per pollutant. NO registers 0.9 µg/m³, NO₂ 1.9 µg/m³, O₃ 54.1 µg/m³, PM₁₀ 0.8 µg/m³ and PM₂.5 0.5 µg/m³. The narrow spread (identical min‑med‑max) highlights the limited temporal depth of the record; there is no information on variability or trends over time. Consequently, while the dataset provides a snapshot of current concentrations for most pollutants, it offers little insight into how air quality fluctuates throughout the day or across different parts of Merléac. Users should keep in mind that conditions can differ by location and moment, especially given the single‑station coverage and the outdated NO measurement.
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 Merléac reflects four valid measurements and is updated within three days, with the most recent update recorded at 2026‑02‑10 15:00 UTC. This snapshot provides a current view of air quality but note that conditions can differ across neighbourhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Kergoff | no | 0.9 | µg/m³ | 2024-03-11 09:00 UTC |
| Kergoff | no2 | 1.9 | µg/m³ | 2026-02-10 15:00 UTC |
| Kergoff | o3 | 54.1 | µg/m³ | 2026-02-10 15:00 UTC |
| Kergoff | pm10 | 0.8 | µg/m³ | 2026-02-10 15:00 UTC |
| Kergoff | pm25 | 0.5 | µg/m³ | 2026-02-10 15:00 UTC |