Air quality in Metz, Grand Est, France today

Mr. Duck’s Air Quality Score

Good air today for Metz, 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 Metz today falls into the Good category according to OpenAQ data. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 4.5 µg/m³ and a PM10 reference value of 5.5 µg/m³, based on eight valid observations.

These figures reflect the current monitoring snapshot for the city. No additional pollutants dominate the assessment at this time. 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 record for Metz draws on data from three monitoring sites and a total of fourteen measurement rows covering the seven listed pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm (PM₁₀), particulate matter 2.5 µm (PM₂.₅) and sulphur dioxide (SO₂). The most recent observations are fairly up‑to‑date for most gases: NO was last reported on 2024-03-11 09:00 UTC, NO₂, PM₁₀, PM₂.₅ and O₃ all have updates from 2026-02-10 15:00 UTC, while CO and SO₂ are only available from older entries dated 2019‑04‑11 08:00 UTC and 2019‑08‑28 07:00 UTC respectively. This means that for five of the seven pollutants the newest data are less than a day old, whereas carbon monoxide and sulphur dioxide rely on measurements that are more than six years old.

Across the recent dataset the concentration ranges vary considerably. NO shows a minimum of 1.8 µg/m³, a median of 2.3 µg/m³ and peaks at 25.8 µg/m³, indicating occasional spikes above the typical background. NO₂ values sit between 8.2 and 25.3 µg/m³ with a median of 13.8 µg/m³, while PM₁₀ stays low, ranging from 5.5 to 9.8 µg/m³ (median 8.8) and PM₂.₅ from 0.9 to 4.5 µg/m³ (median 2.7). Ozone is reported as a single value of 46.4 µg/m³, reflecting the limited temporal resolution for that pollutant at the centre site.

Because CO and SO₂ are only represented by one historic row each, their figures – 218.0 µg/m³ for CO and 0.0 µg/m³ for SO₂ – cannot be compared with the more current series for the other gases. Consequently, while the dataset gives a clear snapshot of recent nitrogen oxides, particulates and ozone across three locations in Metz, it provides limited insight into carbon monoxide and sulphur dioxide trends, and city‑wide conditions may differ outside the times and places captured here.

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 Metz are based on eight valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T15:00:00+00:00 (Updated within 3 days). This snapshot reflects conditions captured across the monitoring network at that time. Keep in mind that air quality can vary by location and moment within the city, so values may differ from those experienced elsewhere or later in the day.

OpenAQ station rows