Air quality in Saint-Lô, Normandy, France today
Mr. Duck’s Air Quality Score
Good air today for Saint-Lô, Normandy, 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‑Lô today is classified as Good. The primary pollutant measured is PM10, with a reported reference value of 3.2 µg/m³ based on three valid observations.
Data are shown via OpenAQ and reflect the current monitoring results for this location. 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 dataset for Saint‑Lô currently contains measurements from a single monitoring site – the Saint‑Lô Eglise station – and provides four pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃) and particulate matter ≤ 10 µm (PM10). Each pollutant is represented by one row, so the total coverage consists of four rows in the OpenAQ feed.
The timestamps show a mixed picture of data freshness. The NO value was recorded on 2024‑03‑11 09:00 UTC and is flagged as “old data”, while the other three pollutants (NO₂, O₃ and PM10) were all last updated on 2026‑02‑10 15:00 UTC, which falls within the “updated within 3 days” window. This means that for most of the measured species the information is very recent, but the NO measurement is more than a year old.
All four pollutants have a single reported value, so there is no observed spread or variability in the data. The median, minimum and maximum are identical for each: NO = 17.2 µg/m³, NO₂ = 10.6 µg/m³, O₃ = 51.0 µg/m³ and PM10 = 3.2 µg/m³. Because the dataset consists of only one location, it cannot capture spatial differences across Saint‑Lô, and the lone older NO reading highlights that some parameters may be less up‑to‑date than others. Users should keep in mind that air quality can change throughout the city and over time, and the current snapshot reflects conditions at a single point source on the dates shown.
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‑Lô reflects three valid measurements and is updated within 3 days, with the most recent reading recorded at 2026‑02‑10T15:00:00+00:00. This snapshot provides a current view of ambient air quality, but conditions can differ across neighbourhoods and change throughout the day, so local variations may not be captured in these figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Saint-Lô Eglise | no | 17.2 | µg/m³ | 2024-03-11 09:00 UTC |
| Saint-Lô Eglise | no2 | 10.6 | µg/m³ | 2026-02-10 15:00 UTC |
| Saint-Lô Eglise | o3 | 51.0 | µg/m³ | 2026-02-10 15:00 UTC |
| Saint-Lô Eglise | pm10 | 3.2 | µg/m³ | 2026-02-10 15:00 UTC |