Air quality in Esch-sur-Alzette, Luxembourg today

Mr. Duck’s Air Quality Score

Good air today for Esch-sur-Alzette, Luxembourg

⚠️ 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 Esch‑sur‑Alzette is currently classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 1.0 and a PM10 reference value of 11.0, based on six valid observations collected via OpenAQ.

Overall conditions meet the criteria for the Good category according to the latest data set. 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 Esch‑sur‑Alzette dataset contains measurements for seven common air‑quality gases and particles: 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). All ten data rows come from two monitoring stations, so the spatial coverage is limited to a small part of the city.

Freshness varies across pollutants. The most recent values for CO, NO₂, O₃, PM10 and PM2.5 were all recorded on 2026‑02‑10 at 18:00 UTC, indicating that those five parameters have up‑to‑date information within the last week. NO was last updated on 2024‑03‑11 at 12:00 UTC, while SO₂ is based on a much older reading from 2022‑02‑03 at 09:00 UTC; these two pollutants therefore reflect conditions that are months or years old.

The numeric range for each pollutant is narrow because only single recent values are available. CO is consistently reported at 240 µg/m³, O₃ at 57 µg/m³, PM10 at 11 µg/m³ and PM2.5 at 1 µg/m³ across the latest row. NO₂ shows a modest spread in its recent three‑day window, ranging from 19.9 to 34.8 µg/m³ with a median of 31.3 µg/m³, while NO varies between 2.2 and 25.1 µg/m³ (median 13.65 µg/m³) in the older data set. SO₂ is reported at a single value of 3.8 µg/m³.

Overall, the dataset provides complete coverage of the seven pollutants but concentrates most recent observations on half of them, with two gases relying on outdated measurements. Consequently, while the current snapshot gives a clear picture of CO, O₃, PM10 and PM2.5 levels, the broader air‑quality situation in Esch‑sur‑Alzette may differ across locations and times not captured by these limited rows.

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 Esch‑sur‑Alzette is based on six valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T18:00:00+00:00 (updated within 3 days). These figures represent a snapshot of conditions at the time of sampling; air quality can differ across neighbourhoods and change throughout the day, so values may vary locally and temporally.

OpenAQ station rows