Air quality in Mülheim an der Ruhr, North Rhine-Westphalia, Germany today
Mr. Duck’s Air Quality Score
Good air today for Mülheim an der Ruhr, North Rhine-Westphalia, Germany
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Mülheim an der Ruhr is classified as Good today. The primary pollutant measured is PM2.5, with a reference concentration of 5.958 µg/m³. Additional monitoring shows a PM10 value of 7.895 µg/m³ based on four valid observations.
Data are shown via OpenAQ and reflect the current assessment 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 air‑quality record for Mülheim an der Ruhr contains a single monitoring station – the Mülheim‑Styrum site – and therefore one row of data for each pollutant. Five pollutants are reported: 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 most recent measurement for NO dates back to 2024‑03‑11 11:00 UTC, while the other four compounds were last updated on 2026‑02‑10 17:00 UTC, showing that the dataset is generally current within a few days for most substances but contains one older entry.
All five pollutants have a single recorded value, which also serves as their minimum, median and maximum because only one observation exists. NO registers at 7.815 µg/m³, NO₂ at 16.297 µg/m³, O₃ at 31.508 µg/m³, PM₁₀ at 7.895 µg/m³ and PM₂.₅ at 5.958 µg/m³. Because there is no spread of measurements, the data cannot illustrate variability over time or across locations within the city; it simply reflects a snapshot from the sole station.
With only one monitoring point, coverage is limited and conditions elsewhere in Mülheim may differ from those captured here. The dataset’s freshness is mixed: three‑day recency for four pollutants versus an older timestamp for NO. Consequently, while the figures give a clear view of current concentrations at the Styrum location, they do not provide a broader picture of city‑wide air quality trends or spatial differences.
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 Mülheim an der Ruhr is based on four valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T17:00:00+00:00. These readings provide a snapshot of current conditions but air quality can differ across neighborhoods and change throughout the day, so local variations may not be fully captured in this summary.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Mülheim-Styrum | no | 7.815 | µg/m³ | 2024-03-11 11:00 UTC |
| Mülheim-Styrum | no2 | 16.297 | µg/m³ | 2026-02-10 17:00 UTC |
| Mülheim-Styrum | o3 | 31.508 | µg/m³ | 2026-02-10 17:00 UTC |
| Mülheim-Styrum | pm10 | 7.895 | µg/m³ | 2026-02-10 17:00 UTC |
| Mülheim-Styrum | pm25 | 5.958 | µg/m³ | 2026-02-10 17:00 UTC |