Air quality in Aywaille, Liège, Belgium today

Mr. Duck’s Air Quality Score

Unhealthy air today for Aywaille, Liège, Belgium

⚠️ 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 Aywaille, Liège, Belgium is currently classified as Unhealthy. The primary pollutant identified is PM2.5, with a reported concentration of 73.64 µg/m³. This measured PM2.5 level represents fine particles that are captured by the monitoring equipment. The measurement is based on five valid observations collected from the monitoring network. All five observations were recorded during the same recent period, giving a coherent picture of the ambient air. PM10 data is not available for this location, so the evaluation focuses exclusively on the PM2.5 reading. The Unhealthy label follows the applied air‑quality categorisation scheme based on pollutant concentrations.

Data is shown via OpenAQ. The five observations represent the most recent sampling period for the area. Each observation includes a UTC timestamp, for example 2026-02-23 12:00 UTC. 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 feed for Aywaille pulls its numbers from a single monitoring location identified as Septroux. Five individual records are present, all recorded within the last 30 days, and the most recent entry for every pollutant shows a timestamp of 2026‑01‑26 17:00 UTC. Because the dataset contains only one station, the coverage reflects conditions at that specific site rather than a city‑wide network.

The available parameters are PM1, PM2.5, relative humidity, temperature and the particle concentration labeled UM003. For PM1 the measured concentration is 42.29683354695638 µg/m³; PM2.5 registers 73.64199981689453 µg/m³; relative humidity is 54.187000083923344 %; temperature reads 7.390000009536743 °C; and UM003 reports 2 362.7419942220054 particles/cm³. In each case the minimum, median and maximum values are identical, indicating that the current snapshot does not capture any temporal spread for these pollutants.

Because the data set consists of a single recent observation per pollutant, there is no observable range or trend within the city’s air‑quality record. The freshness of the timestamps suggests the information is up‑to‑date, yet the limited spatial sampling means that conditions elsewhere in Aywaille may differ from those measured at Septroux. Users should keep in mind that the figures represent one point in time and place, and that broader monitoring would be required to describe the full variability of the city’s atmospheric environment.

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 dataset for Aywaille includes five valid measurements and is updated within 30 days. The most recent data were recorded on 2026-01-26 at 17:00 UTC. This snapshot reflects conditions at the time of collection, but air quality can vary by location and time within the city. Users should consider these limitations when interpreting the values presented.

OpenAQ station rows