Air quality in Vlaardingen, South Holland, Netherlands today

Mr. Duck’s Air Quality Score

Moderate air today for Vlaardingen, South 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 Vlaardingen today is classified as Moderate. The primary pollutant identified is PM2.5, with a measured concentration of approximately 18.3 µg/m³. The accompanying PM10 level is around 24.9 µg/m³. The Moderate rating reflects the combined effect of these particulate concentrations.

A total of nine valid measurements were recorded across the city during the reporting period, and the data are shown via OpenAQ. The nine observations provide the basis for the current assessment and ensure the rating is based on multiple data points. These figures are derived from the most recent set of observations. 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 Vlaardingen in South Holland contains measurements for eight pollutants: nitrogen dioxide (NO₂), ozone (O₃), particulate matter 1 µm (PM1), particulate matter 10 µm (PM10), particulate matter 2.5 µm (PM2.5), relative humidity, temperature and the particle count UM003. These values come from three monitoring stations and a total of thirteen rows of observations, so the spatial coverage is modest and reflects only a few points within the city.

The most recent readings for PM2.5, NO₂, O₃ and PM10 were recorded on 2026‑02‑10 at 21:00 UTC, while the latest data for PM1, relative humidity, temperature and UM003 date back to 2026‑01‑29 at 02:00 UTC. This means that half of the measured variables have updates that are about twelve days older than the others, indicating a mixed freshness across the dataset.

Looking at the numbers, the median PM2.5 concentration is 18.275 µg/m³ with a maximum of 46.38 µg/m³, showing a typical range that stays well below the highest observed value. For NO₂, O₃ and PM10 the median values are negative (‑471.68, ‑491.19 and ‑485.045 µg/m³ respectively), which reflects placeholder or erroneous entries; however, the positive maxima of 51.64 µg/m³ for NO₂, 12.62 µg/m³ for O₃ and 24.91 µg/m³ for PM10 give a more realistic upper bound. The single‑point measurements for PM1 (27.77 µg/m³), relative humidity (55.15 %), temperature (7.37 °C) and UM003 (1 143.54 particles/cm³) are all from the same timestamp, so they provide a snapshot rather than a trend. Overall, the data give a recent but limited picture of air quality in Vlaardingen, and conditions can vary across the city and over time beyond what these few stations capture.

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 Vlaardingen includes nine valid measurements and is updated within 30 days, with the latest refresh on 2026-02-10 at 21:00 UTC. These values represent a snapshot of ambient conditions and should be interpreted as such. Air quality can vary by location and time within the city, so individual experiences may differ from the reported figures.

OpenAQ station rows