Air quality in Lyon, Auvergne-Rhône-Alpes, France today

Mr. Duck’s Air Quality Score

Good air today for Lyon, 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 Lyon today is classified as Good. The primary pollutant identified for the current assessment is PM2.5 (fine particles).

Measurements recorded by OpenAQ show a PM2.5 reference value of 4.9 µg/m³ and a PM10 reference value of 18.0 µg/m³, based on nine valid observations. 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 Lyon air‑quality dataset contains recent measurements for six key pollutants – nitrogen dioxide (NO₂), ozone (O₃), nitric oxide (NO), particulate matter 10 µm or less (PM10), particulate matter 2.5 µm or less (PM2.5) and sulfur dioxide (SO₂). Data come from 16 individual rows recorded at four monitoring stations, all located in the city centre.

Most of the values are fresh: NO₂, O₃, PM10 and PM2.5 were last updated on 2026‑02‑10 15:00 UTC, while NO was refreshed on 2024‑03‑11 09:00 UTC. Only SO₂ is older, with its most recent entry from 2016‑12‑05 01:00 UTC. Across the pollutants, the minimum‑maximum ranges show considerable variation for gases and coarse particles – NO₂ spans 10.3 to 43.5 µg/m³, O₃ ranges from 3.5 to 56.6 µg/m³ and PM10 varies between 3.9 and 31.9 µg/m³. In contrast, the fine particle and sulfur dioxide readings are tightly clustered: PM2.5 stays within 2.2‑4.9 µg/m³ and SO₂ is a constant 0.5 µg/m³.

The median values give a sense of typical conditions: NO₂ sits at 16.9 µg/m³, O₃ at 13.4 µg/m³, NO at 17.4 µg/m³, PM10 at 18.0 µg/m³ and PM2.5 at 3.55 µg/m³. Because the dataset includes only centre‑based stations, it does not capture spatial differences that may exist across other neighbourhoods, and the very old SO₂ record means current sulfur dioxide levels cannot be assessed from this source. Overall, the data provide a recent snapshot for most pollutants but are limited in geographic coverage and in up‑to‑date information for SO₂.

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 reflects nine valid measurements collected for Lyon and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T15:00:00+00:00. This snapshot provides a current view of air quality across the city, but conditions can differ by neighbourhood and change throughout the day, so values may not represent every location or moment in Lyon.

OpenAQ station rows