Air quality in Wijk aan Zee, North Holland, Netherlands today

Mr. Duck’s Air Quality Score

Moderate air today for Wijk aan Zee, 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 Wijk aan Zee is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 11.3 and a PM10 reference value of 14.3, based on four valid observations collected via OpenAQ.

These values reflect the present conditions without implying any trend or cause. 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 air‑quality record for Wijk aan Zee draws on a single monitoring site that contributed eleven data rows covering six pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), particulate matter 10 µm and smaller (PM₁₀), fine particulate matter 2.5 µm and smaller (PM₂.₅), sulphur dioxide (SO₂) and nitric oxide (NO). For five of these compounds the most recent observations were recorded on 2026‑02‑10, all within the last seven days, while the SO₂ reading dates from 2026‑02‑09. The NO data are much older, with the latest entry logged on 2024‑03‑25 and showing a placeholder value of –999.0 µg/m³, indicating that this pollutant is effectively unavailable for current assessment.

Across the five up‑to‑date pollutants the measured concentrations span a wide range. CO values vary from a low of 384 µg/m³ to a high of 934 µg/m³, with a median around 659 µg/m³, suggesting that carbon monoxide levels are consistently elevated throughout the monitoring period. NO₂ shows a narrower spread, ranging between 17 µg/m³ and 37.8 µg/m³, with a typical (median) value of 27.4 µg/m³. Particulate matter also exhibits modest variation: PM₁₀ ranges from 14.3 to 32.2 µg/m³ (median 23.25 µg/m³) and PM₂.₅ stays tightly clustered between 10.0 and 11.3 µg/m³ (median 10.65 µg/m³). Sulphur dioxide is the lowest‑level pollutant in this set, recorded from 1.9 up to 17.5 µg/m³ with a median of 9.7 µg/m³.

Because the dataset relies on a single station, spatial coverage across Wijk aan Zee is limited; conditions can differ in other neighbourhoods or at different times of day. The freshness of most measurements is good, but the absence of recent NO data and the reliance on one monitoring point mean that the picture presented here captures only part of the city’s overall air‑quality situation.

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 Wijk aan Zee is based on four valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T21:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can vary across different locations and moments throughout the city.

OpenAQ station rows