Air quality in Herdorf, Rhineland-Palatinate, Germany today
Mr. Duck’s Air Quality Score
Good air today for Herdorf, Rhineland-Palatinate, 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 Herdorf today is classified as Good. The primary pollutant identified is PM10, which refers to coarser particulate matter.
According to the latest data shown via OpenAQ, the measured PM10 value is 7.959349 and three valid measurements were recorded 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 Herdorf consists of a single monitoring station that reports five pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulfur dioxide (SO₂). The dataset contains one row per pollutant, so the total coverage is limited to this lone site.
The most recent measurements are fairly up‑to‑date for four of the five substances. NO₂, O₃ and PM₁₀ were all last updated on 2026-02-10 17:00 UTC, while SO₂ was recorded on 2025-04-29 08:00 UTC. The only older entry is NO, which dates back to 2024-03-11 11:00 UTC and is flagged as “Old data”. Across the pollutants the values are all single‑point observations with no spread: each metric shows identical minimum, median and maximum figures (for example, NO₂ consistently reads 13.6115913 µg/m³). This uniformity indicates that the current snapshot does not capture variability over time.
Because the dataset relies on a single station, it cannot represent spatial differences within Herdorf; conditions may differ in other neighbourhoods or at times outside the recorded moments. The freshness of most data is good (within the last few days for three pollutants), but the older NO reading and the year‑old SO₂ value highlight gaps that could affect a complete picture of the city’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 Herdorf are based on three valid measurements and have been updated within 3 days, with the latest reading recorded at 2026‑02‑10 17:00 UTC. This snapshot reflects conditions at a single monitoring point; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Westerwald-Herdorf | no | 0.99760002 | µg/m³ | 2024-03-11 11:00 UTC |
| Westerwald-Herdorf | no2 | 13.6115913 | µg/m³ | 2026-02-10 17:00 UTC |
| Westerwald-Herdorf | o3 | 33.91693 | µg/m³ | 2026-02-10 17:00 UTC |
| Westerwald-Herdorf | pm10 | 7.959349 | µg/m³ | 2026-02-10 17:00 UTC |
| Westerwald-Herdorf | so2 | 2.487364 | µg/m³ | 2025-04-29 08:00 UTC |