Air quality in Unna, North Rhine-Westphalia, Germany today
Mr. Duck’s Air Quality Score
Good air today for Unna, 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 Unna today is classified as Good. The primary pollutant identified is PM2.5, with a measured concentration of 5.406 µg/m³ based on three valid observations from OpenAQ data.
Overall conditions meet the Good category criteria, and no additional pollutants are highlighted for this assessment. 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 Unna draws on a single monitoring site – Unna‑Königsborn – which supplies four separate pollutant measurements. All four pollutants measured by the OpenAQ feed are present: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃) and fine particulate matter (PM2.5). Because there is only one station, the dataset consists of four rows in total, each representing a distinct chemical species rather than multiple locations across the city.
The timestamps show an uneven picture of data freshness. The NO value dates back to 2024‑03‑11 11:00 UTC, making it considerably older than the other three readings, which were all recorded on 2026‑02‑10 17:00 UTC and are therefore updated within the last three days. This means that for most pollutants the information is very current, while the NO measurement reflects conditions from more than a year ago. Users should keep in mind that the city’s air quality can change over time and space, so a single, recent snapshot may not capture all local variations.
Across the four pollutants the recorded concentrations are identical to their respective minimum, median and maximum values, indicating no observed variability within this limited dataset. NO registers at 3.707 µg/m³, NO₂ at 11.827 µg/m³, O₃ at 43.341 µg/m³ and PM2.5 at 5.406 µg/m³. Because each pollutant has only one reported figure, there is no spread or percentile range to describe. Consequently, while the data provide a clear point‑in‑time view for most chemicals, the lack of multiple stations or repeated measurements limits insight into broader spatial patterns or temporal trends within Unna.
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 Unna are based on three valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10T17:00:00+00:00. This snapshot reflects conditions at specific monitoring points and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Unna-Königsborn | no | 3.707 | µg/m³ | 2024-03-11 11:00 UTC |
| Unna-Königsborn | no2 | 11.827 | µg/m³ | 2026-02-10 17:00 UTC |
| Unna-Königsborn | o3 | 43.341 | µg/m³ | 2026-02-10 17:00 UTC |
| Unna-Königsborn | pm25 | 5.406 | µg/m³ | 2026-02-10 17:00 UTC |