Air quality in Auxerre, Bourgogne – Franche-Comté, France today

Mr. Duck’s Air Quality Score

Good air today for Auxerre, Bourgogne – Franche-Comté, 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 Auxerre today is classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 2.2 and a PM10 reference value of 3.5, based on three valid observations recorded by OpenAQ.

These values indicate that the current concentrations are within the range associated with the Good category. 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 air‑quality record for Auxerre includes four measured pollutants – nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀) and particulate matter ≤ 2.5 µm (PM₂.₅). The dataset contains seven rows of observations drawn from two monitoring stations, so the spatial coverage is limited to a small number of points within the city.

The most recent data for O₃, PM₁₀ and PM₂.5 were all logged on 2026‑02‑10 at 15:00 UTC, meaning they are fresh (updated within the last three days). For ozone the values span from a low of 5.3 µg/m³ to a high of 82.6 µg/m³, with a median around 44 µg/m³ and the 10th‑percentile at 13.0 µg/m³, indicating a fairly wide spread. PM₁₀ ranges between 3.5 and 11.8 µg/m³, median 7.65 µg/m³; the 10th‑percentile is 4.33 µg/m³ and the 90th‑percentile 10.97 µg/m³, showing a moderate variability. PM₂.5 values are between 2.2 and 10.8 µg/m³, median 6.5 µg/m³, with the lower decile at 3.06 µg/m³ and upper decile at 9.94 µg/m³.

In contrast, NO₂ data come from a single older entry recorded on 2018‑07‑11 at 08:00 UTC (value 15.75 µg/m³). This is the only recent measurement for that pollutant, and no newer rows are available, so the NO₂ picture is far less current than the other three gases. Overall, while ozone and particulate matter have up‑to‑date observations that capture a broad range of concentrations, nitrogen dioxide is represented by a solitary, dated point, highlighting an uneven temporal coverage across pollutants in Auxerre’s air‑quality reporting.

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 Auxerre are based on three valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10 15:00 UTC. These values reflect a brief sampling period and may not capture all fluctuations across the city; air quality can vary by location and time even within short intervals.

OpenAQ station rows