Air quality in Châlons-en-Champagne, Grand Est, France today
Mr. Duck’s Air Quality Score
Good air today for Châlons-en-Champagne, Grand Est, 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 Châlons‑en‑Champagne today is classified as Good. The main pollutant identified is PM10, with a reference value of 10.3 µg/m³ based on three valid measurements reported through OpenAQ.
These data indicate that the current concentration of coarse particles does not exceed the referenced threshold for this 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 dataset for Châlons‑en‑Champagne contains a single monitoring station that reports five pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO2), ozone (O3), particulate matter 10 µm or less (PM10) and sulfur dioxide (SO2). Because there is only one row of data, the coverage is limited to this lone location; no additional stations are available for the city.
The most recent measurements are fairly fresh for three of the pollutants. NO was last recorded on 2024‑03‑11 08:00 UTC, while both NO2 and O3 have updates from 2026‑02‑10 15:00 UTC, showing data that is at most a few days old. PM10 is slightly older, with its latest value dated 2026‑02‑09 03:00 UTC, still within the past week. In contrast, SO2 has not been updated since 2019‑09‑17 08:00 UTC, making it the only pollutant whose record is several years old.
All five pollutants have a single reported value, so the minimum, median and maximum are identical for each. NO sits at 14.8 µg/m³, NO2 at 5.6 µg/m³, O3 at 69.1 µg/m³, PM10 at 10.3 µg/m³ and SO2 at 0.3 µg/m³. Because there is no spread of observations, the dataset cannot show variability over time or across different parts of the city. The uneven freshness—recent for NO, NO2 and O3 but very old for SO2—highlights that some aspects of the local air quality are monitored more continuously than others. Consequently, while the available numbers give a snapshot of conditions at one point in time, they do not capture how air quality may change across locations or over longer periods within Châlons‑en‑Champagne.
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 current dataset for Châlons‑en‑Champagne includes three valid measurements and is updated within 3 days, with the latest values recorded on 2026‑02‑10 at 15:00 UTC. These figures represent a snapshot of ambient conditions across the city; air quality can differ by specific location and time of day, so individual experiences may vary from the reported averages.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| CHALONS | no | 14.8 | µg/m³ | 2024-03-11 08:00 UTC |
| CHALONS | no2 | 5.6 | µg/m³ | 2026-02-10 15:00 UTC |
| CHALONS | o3 | 69.1 | µg/m³ | 2026-02-10 15:00 UTC |
| CHALONS | pm10 | 10.3 | µg/m³ | 2026-02-09 03:00 UTC |
| CHALONS | so2 | 0.3 | µg/m³ | 2019-09-17 08:00 UTC |