Air quality in Colmar, Grand Est, France today

Mr. Duck’s Air Quality Score

Good air today for Colmar, Grand Est, 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 Colmar today is classified as Good. The main pollutant identified is PM10, with a measured concentration of 23.5 µg/m³ based on three valid observations.

These values are presented through OpenAQ data and reflect the current monitoring results for the city. 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

Colmar’s OpenAQ feed contains data for five measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulfur dioxide (SO₂). The city is represented by nine sensor rows in total, seven of which are classified as real‑time and two as static. Across the dataset the most recent measurements were recorded on 2026‑02‑10 for NO₂ at 17:00 UTC and O₃ at 15:00 UTC, while PM₁₀ was last updated on 2026‑02‑09 at 03:00 UTC. The remaining pollutants have older timestamps: the single NO reading dates from 2024‑03‑11 (08:00 UTC) and the SO₂ value is from 2019‑09‑12 (08:00 UTC). This mix of fresh and legacy data means that for some compounds the current city picture is very recent, whereas for others it reflects conditions measured years ago.

The available values show a modest spread. NO₂ ranges from a minimum of 18.4 µg/m³ to a maximum of 25.3 µg/m³, with a median of 21.85 µg/m³ and the 10th‑percentile at 19.09 µg/m³, indicating that most recent readings sit in the low‑mid twenties. PM₁₀ varies between 9.5 µg/m³ and 23.5 µg/m³; its median is 16.5 µg/m³ and the 90th‑percentile reaches 22.1 µg/m³, showing a broader distribution than NO₂. The single NO measurement is fixed at 15.2 µg/m³, while SO₂ registers consistently at 0.0 µg/m³. O₃ is reported as a solitary value of 52.4 µg/m³ from the Colmar Sud station.

Because the dataset includes only one row for NO and another for SO₂, coverage for these gases is limited compared with the richer sampling of NO₂ and PM₁₀. The overall freshness is good for NO₂, O₃ and PM₁₀, but older timestamps for NO and especially SO₂ mean that city‑wide conditions for those pollutants may differ from what the single recorded values suggest. Users should keep in mind that air quality can change across neighborhoods and over time, and the current snapshot reflects the available sensor reporting dates.

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 Colmar reflects three valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T17:00:00+00:00. This snapshot provides a brief view of current air quality conditions; however, concentrations can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows