Air quality in Zaandam, North Holland, Netherlands today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Zaandam, North Holland, Netherlands

⚠️ 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 Zaandam today falls into the USG category according to OpenAQ data. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 36.389 µg/m³, while the reference value for PM10 stands at 23.7 µg/m³ based on ten valid observations.

These figures reflect the current monitoring results without interpretation or recommendation. 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 Zaandam air‑quality feed contains eight measured variables – nitrogen monoxide (NO), nitrogen dioxide (NO2), ozone (O3), particulate matter of 1 µm (PM1), 2.5 µm (PM2.5) and 10 µm (PM10), relative humidity and temperature – recorded across three monitoring stations and a total of thirteen data rows. The most recent updates are from early February 2026, with NO2, PM10, PM2.5, PM1, relative humidity and temperature all refreshed on 2026‑02‑10 between 21:00 and 22:00 UTC. By contrast, the NO record dates back to 2024‑03‑25 and the O3 reading is from early 2021, indicating that those two pollutants have not been measured recently in this location.

For the currently fresh variables the observed range is modest. NO2 values span from a low of 41.5 µg/m³ to a high of 42.8 µg/m³, with a median around 42.15 µg/m³, showing little variation across the recent measurements. PM10 ranges between 19.4 and 23.7 µg/m³ (median ≈21.55 µg/m³), while PM2.5 shows a broader spread from 20.1 up to 36.39 µg/m³ (median ≈28.24 µg/m³). The single‑point readings for PM1, relative humidity and temperature are all identical across the latest row – 22.69 µg/m³ for PM1, 63.89 % humidity and 13.60 °C respectively – because only one recent observation is available for each.

Overall the dataset provides a fairly up‑to‑date picture for nitrogen dioxide, particulate matter and basic meteorological conditions, but it lacks current information on NO and ozone. Users should keep in mind that air quality can differ across neighbourhoods and over time, especially for those pollutants where only older or missing data are present.

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 Zaandam includes ten valid measurements and is updated within three days, with the most recent values recorded on 2026‑02‑10 at 22:00 UTC. These figures provide a current snapshot of air quality across North Holland’s city centre, but conditions can differ by neighbourhood and time of day, so local variations may not be fully captured in this summary.

OpenAQ station rows