Air quality in Woerden, Utrecht, Netherlands today
Mr. Duck’s Air Quality Score
Good air today for Woerden, Utrecht, 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 Woerden today is classified as Good. The primary pollutant measured is PM10, with a reported reference value of 14.67 micrograms per cubic meter based on four valid observations.
Data are shown via OpenAQ and reflect the current monitoring results for this location. 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 Woerden includes five rows of measurements from a single monitoring location, covering the five standard air‑quality pollutants: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃) and particulate matter ≤ 10 µm (PM10). For CO the most recent entry dates back to 2021‑04‑20 21:00 UTC, which is flagged as old data, while the other four pollutants were all last updated on 2026‑02‑10 21:00 UTC – well within the past seven days.
All reported values are identical across their minimum, median and maximum statistics, indicating that each pollutant currently has a single recorded measurement rather than a range of observations. The CO reading stands at –995.0 µg/m³, which reflects an anomalous placeholder rather than a realistic concentration. In contrast, the recent measurements show NO at 1.05 µg/m³, NO₂ at 17.38 µg/m³, O₃ at 26.67 µg/m³ and PM10 at 14.67 µg/m³, each recorded at the Zegveld‑Oude Meije site.
Because the dataset contains only one active station and a single recent value per pollutant (except for CO), it provides a very limited snapshot of air quality in Woerden. Conditions can differ across neighborhoods and over time, so this narrow coverage should be considered when interpreting the numbers.
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 Woerden are based on four valid measurements and have been refreshed recently, with the latest update recorded at 2026‑02‑10T21:00:00+00:00 (updated within 3 days). This snapshot reflects conditions at the time of sampling; air quality can vary by location and time within the city, so values may differ across neighborhoods or later in the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Zegveld-Oude Meije | no | 1.05 | µg/m³ | 2026-02-10 21:00 UTC |
| Zegveld-Oude Meije | no2 | 17.38 | µg/m³ | 2026-02-10 21:00 UTC |
| Zegveld-Oude Meije | o3 | 26.67 | µg/m³ | 2026-02-10 21:00 UTC |
| Zegveld-Oude Meije | pm10 | 14.67 | µg/m³ | 2026-02-10 21:00 UTC |