Air quality in Assendelft, North Holland, Netherlands today
Mr. Duck’s Air Quality Score
Good air today for Assendelft, North Holland, Netherlands
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Assendelft today is classified as Good. The primary pollutant measured is PM2.5, with a recorded concentration of 3.878 µg/m³ based on five valid observations from OpenAQ.
Overall conditions meet the Good category criteria, and no additional pollutants are reported for this assessment. 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 Assendelft air‑quality feed contains five measured pollutants – PM1, PM2.5, relative humidity, temperature and UM003 (particle concentration) – all reported from a single monitoring station. In total the dataset holds five rows of observations, each row representing one pollutant’s latest reading. Every value was last updated on 2026‑02‑10 22:00 UTC, which falls within the “updated within 7 days” freshness window, so the data are as current as the source provides.
Because there is only one station, each pollutant has a single recorded figure rather than a range. PM1 registers at 1.6583333353201553 µg/m³, while PM2.5 measures 3.8780000050862626 µg/m³. Relative humidity is 50.595000076293935 %, temperature stands at 16.926833216349284 °C and the UM003 particle count is 326.4778335571289 particles/cm³. For every pollutant the minimum, median and maximum values are identical, indicating that only one snapshot is available for each metric.
The dataset’s breadth is therefore limited: coverage is confined to a single location and a single moment in time for each pollutant. While the timestamps are recent, the lack of multiple stations or repeated measurements means the figures cannot capture spatial or temporal variability across Assendelft. Users should keep in mind that conditions can differ elsewhere in the city or change after the recorded moment, and that the current snapshot provides only a narrow view of the local air‑quality 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 Assendelft includes five valid measurements and is refreshed regularly, having been updated within the past three days (last update: 2026‑02‑10T22:00:00+00:00). These figures represent a snapshot of current conditions; air quality can differ across neighborhoods and change throughout the day, so values may not reflect every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Assendelft | pm1 | 1.6583333353201553 | µg/m³ | 2026-02-10 22:00 UTC |
| Assendelft | pm25 | 3.8780000050862626 | µg/m³ | 2026-02-10 22:00 UTC |
| Assendelft | relativehumidity | 50.595000076293935 | % | 2026-02-10 22:00 UTC |
| Assendelft | temperature | 16.926833216349284 | c | 2026-02-10 22:00 UTC |
| Assendelft | um003 | 326.4778335571289 | particles/cm³ | 2026-02-10 22:00 UTC |