Air quality in Municipality of Marousi, Attica, Greece today
Mr. Duck’s Air Quality Score
Good air today for Municipality of Marousi, Attica, Greece
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in the Municipality of Marousi is classified as Good today. The primary pollutant identified is PM10, which refers to coarser particulate matter measured in the local monitoring network.
Three valid measurements were recorded, and the reference value for PM10 is 8.0 µg/m³. These figures reflect the current assessment provided through OpenAQ data. 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 Marousi includes five measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃) and particulate matter PM10 – collected from a single monitoring station that contributed five rows of data. The most recent observations were recorded on 2026‑02‑10 at 19:00 UTC for CO, NO₂, O₃ and PM10, while the NO reading dates back to 2024‑03‑11 at 12:00 UTC, indicating that the nitrogen oxide measurement is older than the others. All five pollutants have a single reported value, so the minimum, median and maximum are identical for each: CO 700.0 µg/m³, NO 20.0 µg/m³, NO₂ 13.0 µg/m³, O₃ 53.0 µg/m³ and PM10 8.0 µg/m³. Because there is only one station, the data do not capture spatial variation across Marousi; conditions can differ in other neighborhoods or at different times of day.
The freshness of the dataset is mixed. Four of the five pollutants were updated within the last three days, showing a very recent snapshot of air quality for those compounds. In contrast, the NO measurement is classified as “old data,” reflecting a gap of nearly two years since its last update. This uneven temporal coverage means that while CO, NO₂, O₃ and PM10 provide an up‑to‑date picture, the nitrogen oxide figure may no longer represent current levels.
Overall, the dataset offers a concise but limited view: a single location, one value per pollutant, and recent timestamps for most compounds except NO. Users should keep in mind that air quality can vary across different parts of Marousi and over time, so these numbers represent only the specific moments captured by the available sensor.
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 the Municipality of Marousi are based on three valid measurements and have been updated within 3 days, with the latest reading recorded at 2026‑02‑10T19:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and fluctuate throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| MAROUSI | no | 20.0 | µg/m³ | 2024-03-11 12:00 UTC |
| MAROUSI | no2 | 13.0 | µg/m³ | 2026-02-10 19:00 UTC |
| MAROUSI | o3 | 53.0 | µg/m³ | 2026-02-10 19:00 UTC |
| MAROUSI | pm10 | 8.0 | µg/m³ | 2026-02-10 19:00 UTC |