Air quality in Saint-Quentin, Hauts-de-France, France today
Mr. Duck’s Air Quality Score
Good air today for Saint-Quentin, Hauts-de-France, 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‑Quentin today is classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 3.5 and a PM10 reference value of 6.0, based on five valid observations collected via 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
Saint‑Quentin’s open‑air quality feed contains six measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulphur dioxide (SO₂). The data come from eight rows recorded at two monitoring stations, giving a modest spatial coverage for the city.
The most recent observations are fairly fresh for four of the pollutants: NO₂ values range from 18.0 to 38.1 µg/m³ with a median of about 28 µg/m³ (last updated 2026‑02‑10 15:00 UTC); PM₂.₅ is tightly clustered between 3.3 and 3.5 µg/m³, median 3.4 µg/m³ (same timestamp); O₃ shows a single reading of 70.8 µg/m³; and PM₁₀ records a constant 6.0 µg/m³. These four datasets were all refreshed within the past three days.
In contrast, NO and SO₂ are based on older measurements. The lone NO entry is 3.8 µg/m³ from 2024‑03‑11 09:00 UTC, while the SO₂ reading is 0.0 µg/m³ dated 2024‑12‑31 13:00 UTC. Because these two pollutants have only one historic row each, their current city‑wide levels cannot be assessed with the same confidence as the fresher data.
Overall, the dataset provides a clear picture of recent NO₂, PM₂.₅, O₃ and PM₁₀ conditions but is limited for NO and SO₂ due to sparse and dated entries. Users should keep in mind that air quality can vary across different neighborhoods and times, and the available rows represent only two fixed monitoring sites within Saint‑Quentin.
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‑Quentin are based on five valid measurements and have been refreshed recently, with the latest update recorded on 10 February 2026 at 15:00 UTC (updated within three days). This snapshot reflects conditions at the time of sampling; air quality can vary across different neighbourhoods and change throughout the day, so values may differ from what you experience elsewhere in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| TRAF Saint Quent 14 | no2 | 38.07 | µg/m³ | 2017-12-12 15:00 UTC |
| TRAF Saint Quent 14 | pm25 | 3.3 | µg/m³ | 2026-02-10 15:00 UTC |
| P. Roth St Quentin | no | 3.8 | µg/m³ | 2024-03-11 09:00 UTC |
| P. Roth St Quentin | no2 | 18.0 | µg/m³ | 2026-02-10 15:00 UTC |
| P. Roth St Quentin | o3 | 70.8 | µg/m³ | 2026-02-10 15:00 UTC |
| P. Roth St Quentin | pm10 | 6.0 | µg/m³ | 2026-02-10 15:00 UTC |
| P. Roth St Quentin | pm25 | 3.5 | µg/m³ | 2026-02-10 15:00 UTC |
| P. Roth St Quentin | so2 | 0.0 | µg/m³ | 2024-12-31 13:00 UTC |