Air quality in Alsemberg, Flemish Brabant, Belgium today

Mr. Duck’s Air Quality Score

Good air today for Alsemberg, 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 Alsemberg today is classified as Good. The main pollutant identified is PM2.5, with a measured concentration of 1.10 µg/m³ based on the latest data set that includes fifteen valid observations.

Overall conditions meet the criteria for a Good rating according to OpenAQ information. 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 Alsemberg air‑quality feed draws from four monitoring stations and currently holds 20 recent data rows. Fifteen of those rows were recorded within the past three days, while five are older than three days; none are marked as “today” or older than a month. All pollutants share the same most recent timestamp of 2026‑02‑10 19:00 UTC, so the freshest values for each parameter are from that moment.

The dataset includes measurements for PM1, PM2.5, relative humidity, temperature and particle count (UM003). For the fine particles, PM1 values range from essentially zero up to 1.6 µg/m³, with a median of about 0.09 µg/m³; PM2.5 spans 0.02‑6.5 µg/m³ and centers around 0.73 µg/m³. Relative humidity stays high throughout the period, varying between roughly 89.5 % and 92.95 %, with a median near 91.4 %. Temperature is modest, moving from 9 °C to just over 13 °C and typically sitting around 9.5 °C. The particle concentration measured as UM003 shows the widest spread, from about 73 particles/cm³ up to 341.5, with a median of roughly 216 particles/cm³.

Because only fifteen rows are recent, the snapshot reflects conditions mainly for the last few days and may not capture longer‑term variability across Alsemberg. The four stations provide coverage for all listed pollutants, but the distribution of data points is uneven: PM1 and PM2.5 have very low maximum values compared with the broader range seen in UM003, while humidity and temperature remain tightly clustered. Users should keep in mind that local conditions can differ by neighbourhood and time, especially when older rows constitute a quarter of the available records.

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 Alsemberg reflects 15 valid measurements and is Updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 19:00 UTC. This snapshot provides a current view of air quality across Flemish Brabant, but conditions can differ by specific neighbourhoods and times of day, so local variations may exist beyond what is displayed here.

OpenAQ station rows