Air quality in Schiedam, South Holland, Netherlands today
Mr. Duck’s Air Quality Score
Moderate air today for Schiedam, South 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 Schiedam today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 9.3 and a PM10 reference value of 13.9, based on four valid observations.
Data are shown via OpenAQ. 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 Schiedam contains a single monitoring location – the Alphons Arienstraat station – and five pollutant rows in total. All of the standard urban pollutants are represented: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM10) and particulate matter 2.5 µm or less (PM2.5). The NO reading is recorded as –999.0 µg/m³, which indicates a placeholder rather than a valid measurement; this value dates back to 2024‑03‑25 22:00 UTC. By contrast, the remaining four pollutants have concrete values and were last updated on 2026‑02‑10 21:00 UTC, making them the freshest data in the set.
For the valid measurements the minimum, median and maximum are identical, showing no observed variability within the recorded period. NO₂ is consistently reported at 46.2 µg/m³, O₃ at 13.5 µg/m³, PM10 at 13.9 µg/m³ and PM2.5 at 9.3 µg/m³. Because each pollutant has only a single data point, the inter‑percentile range (10th–90th percentile) is also zero, underscoring that the current snapshot does not capture any spread or trend. The dataset therefore offers a very narrow view of air quality in Schiedam: one station, five rows, and fresh timestamps for four pollutants but an outdated placeholder for NO.
Overall, the coverage is limited to a single site, and while most pollutant values are recent, the lack of multiple observations means that city‑wide conditions could differ across neighborhoods or over time. Users should keep in mind that this snapshot reflects only one location at a specific moment rather than a comprehensive picture of Schiedam’s air quality.
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 Schiedam is based on four valid measurements and was updated within 3 days, with the latest refresh recorded at 2026‑02‑10T21:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and fluctuate throughout the day, so the values presented may not represent current or citywide conditions.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Schiedam-Alphons Arienstraat | no2 | 46.2 | µg/m³ | 2026-02-10 21:00 UTC |
| Schiedam-Alphons Arienstraat | o3 | 13.5 | µg/m³ | 2026-02-10 21:00 UTC |
| Schiedam-Alphons Arienstraat | pm10 | 13.9 | µg/m³ | 2026-02-10 21:00 UTC |
| Schiedam-Alphons Arienstraat | pm25 | 9.3 | µg/m³ | 2026-02-10 21:00 UTC |