Air quality in Overijse, Flemish Brabant, Belgium today

Mr. Duck’s Air Quality Score

Good air today for Overijse, Flemish Brabant, 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 Overijse today is classified as Good, with PM2.5 identified as the primary pollutant.

Measurements from OpenAQ show a PM2.5 concentration of 7.9 µg/m³ based on fifteen valid readings taken throughout the monitoring period. 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 dataset for Overijse includes five measured pollutants – PM1, PM2.5, relative humidity, temperature and UM003 (particle number concentration). Data come from six monitoring stations that together provide thirty individual rows of observations. All the most recent values were recorded on 2026-02-10 at 19:00 UTC, and each pollutant is flagged as having been updated within the past three days, so the information reflects a very current snapshot of conditions across the city.

PM1 concentrations range from essentially zero up to about 2.9 µg/m³, with a median value just under 0.9 µg/m³; PM2.5 shows a broader spread, varying between 0 and roughly 7.9 µg/m³ and centering around a median of 3.1 µg/m³. Relative humidity values are high throughout the period, spanning from about 55 % to the full 100 %, with a median near 88 %. Temperature measurements cover a modest interval of 8 °C to almost 16 °C, medianing at roughly 11.7 °C. The particle number concentration (UM003) is the most variable metric, moving from around 80 particles/cm³ up to about 419 particles/cm³ and typically sitting near 292 particles/cm³.

Because the data set contains only six stations, spatial coverage is limited; conditions can differ between neighbourhoods that are not directly represented. Nevertheless, the uniform freshness of the timestamps means that each pollutant’s latest reading reflects the same moment in time, allowing a consistent cross‑pollutant view of Overijse’s air quality on 2026-02-10.

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 Overijse contains fifteen valid measurements and is updated within three days, with the most recent values recorded at 2026‑02‑10T19:00:00+00:00. These figures represent a snapshot of current conditions; however, air quality can differ across neighbourhoods and change throughout the day, so local variations may not be fully captured by this summary.

OpenAQ station rows