Air quality in Saint-Chamond, Auvergne-Rhône-Alpes, France today
Mr. Duck’s Air Quality Score
Good air today for Saint-Chamond, Auvergne-Rhône-Alpes, 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 Saint‑Chamond today is classified as Good. The primary pollutant measured is PM2.5, with a reported concentration of 7.5 µg/m³ based on two valid observations from OpenAQ data.
Overall conditions meet the Good category criteria, and the available measurements indicate that fine particulate levels are at 7.5 µg/m³. 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 Saint‑Chamond air‑quality record draws on four data rows collected at a single monitoring site, covering the four key pollutants tracked by OpenAQ: nitrogen dioxide (NO2), ozone (O3), particulate matter ≤ 10 µm (PM10) and particulate matter ≤ 2.5 µm (PM2.5). The dataset shows a mixed picture of freshness. Ozone is the most up‑to‑date, with its last reading logged on 2026‑02‑10 at 15:00 UTC, while PM2.5 follows closely, recorded on 2026‑02‑09 at 03:00 UTC. In contrast, NO2 data are older, dated 2023‑01‑25 at 12:00 UTC, and the PM10 entry is from 2024‑05‑22 at 18:00 UTC, indicating that recent information for these two pollutants is not currently available.
Across the four rows the measured values are all single points rather than ranges. NO2 registers a constant 14.9 µg/m³, O3 a steady 40.4 µg/m³, PM10 shows an anomalous –1.0 µg/m³ (a placeholder indicating missing or invalid data), and PM2.5 records 7.5 µg/m³. Because each pollutant has only one reported figure, the median, minimum and maximum are identical for every component, offering no insight into variability over time at this location.
The limited station coverage—one site supplying all four pollutants—means that spatial differences within Saint‑Chamond cannot be captured, and the age of some measurements suggests that conditions may have changed since those values were recorded. Users should keep in mind that the available data provide a snapshot rather than a continuous picture, and that real‑time air quality can differ across neighborhoods and moments throughout the day.
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 Saint‑Chamond are based on two valid measurements and were updated within three days, with the latest reading recorded at 15:00 UTC on 10 February 2026. These figures represent a snapshot of ambient conditions at that moment; air quality can differ across neighborhoods and change throughout the day, so values may not reflect current or localized conditions elsewhere in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| SAINT-CHAMOND | no2 | 14.9 | µg/m³ | 2023-01-25 12:00 UTC |
| SAINT-CHAMOND | o3 | 40.4 | µg/m³ | 2026-02-10 15:00 UTC |
| SAINT-CHAMOND | pm25 | 7.5 | µg/m³ | 2026-02-09 03:00 UTC |