Air quality in Clermont-Ferrand, Auvergne-Rhône-Alpes, France today

Mr. Duck’s Air Quality Score

Good air today for Clermont-Ferrand, Auvergne-Rhône-Alpes, France

⚠️ 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 Clermont‑Ferrand today is classified as Good. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 reference value of 1.0 µg/m³ and a PM10 reference value of 3.8 µg/m³, based on eight valid observations recorded by 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 OpenAQ feed for Clermont‑Ferrand supplies data on six key pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀) and particulate matter ≤ 2.5 µm (PM₂.₅). These measurements come from five monitoring stations, each contributing one or more rows of data, for a total of 21 recent entries across the dataset.

The most up‑to‑date observations are from early February 2026 for NO, NO₂, PM₁₀, O₃ and PM₂.5, with timestamps shown as 2026-02-10 15:00 UTC. CO is the only pollutant whose latest reading dates back to 2023-12-15 10:00 UTC, indicating a gap of more than two years for that metric. Typical values illustrate the spread within the city: NO ranges from 1.8 µg/m³ up to 59.9 µg/m³ with a median of 20.4 µg/m³; NO₂ varies between 6.5 and 67.7 µg/m³, median 14.4 µg/m³; PM₁₀ is low, from 0.1 to 6.1 µg/m³, median 3.15 µg/m³; O₃ shows a broader span of 3.7 to 56.5 µg/m³, median 4.8 µg/m³; PM₂.5 is tightly clustered between 0.9 and 1.0 µg/m³, median 1.0 µg/m³; CO is a single recorded value of 270.0 µg/m³.

These figures reveal that most pollutants have recent coverage across the five stations, while CO data are outdated and limited to one historic entry. The distribution of values also differs: NO and O₃ exhibit wide ranges, whereas PM₂.5 remains consistently low. Because the dataset combines both fresh and older records, conditions reported for Clermont‑Ferrand can differ by location and time, especially for pollutants with sparse or stale observations.

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 Clermont‑Ferrand are based on eight valid measurements and have been updated within three days, with the most recent reading recorded at 2026‑02‑10T15:00:00+00:00. This snapshot reflects conditions at the time of collection; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows