Air quality in Colmenar Viejo, Community of Madrid, Spain today
Mr. Duck’s Air Quality Score
Good air today for Colmenar Viejo, Community of Madrid, Spain
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Colmenar Viejo is classified as Good today. The primary pollutant identified is PM10, with a measured reference value of 5.0 µg/m³.
Six valid measurements were recorded for the current assessment period, confirming the reported values. 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 Colmenar Viejo includes measurements of carbon monoxide (CO), nitrogen oxides (NO and NO₂), ozone (O₃) and particulate matter up to 10 µm (PM₁₀). Data come from two monitoring stations that together provide fourteen individual rows of observations. For four of the pollutants – CO, NO₂, O₃ and PM₁₀ – the most recent values were recorded on 2026‑02‑09 at 15:00 UTC, so these readings are fresh, having been updated within the last seven days. The nitrogen monoxide (NO) data are older, with the latest entry dated 2024‑02‑28 at 23:00 UTC.
Across the recent measurements the observed concentrations span a wide range. CO values vary from a low of 700 µg/m³ to a high of 1 100 µg/m³, with a median around 800 µg/m³; NO₂ ranges between 11 and 46 µg/m³, centred near 14 µg/m³; O₃ shows a narrower spread from 24 up to 57 µg/m³, typically about 56 µg/m³ at the upper end of its distribution; PM₁₀ is consistently low, staying between 5 and 26 µg/m³ with a median of 5 µg/m³. The older NO data are much lower, ranging from 1 to 6 µg/m³ and averaging roughly 3.5 µg/m³.
Because the dataset contains only two stations, spatial coverage is limited; conditions can differ across neighborhoods that are not directly monitored. Moreover, while most pollutants have recent observations, the NO record is dated, indicating a gap in up‑to‑date information for that specific gas. Users should keep in mind that the available numbers reflect snapshots from these monitoring points rather than a comprehensive citywide picture.
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 dataset for Colmenar Viejo includes six valid measurements and was refreshed on 2026‑02‑09T15:00:00+00:00, meaning the information is updated within three days. While these figures give a current overview of air quality, conditions can differ across neighbourhoods and change throughout the day, so this snapshot may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| ES1613A | no | 6.0 | µg/m³ | 2024-01-01 00:00 UTC |
| ES1613A | no2 | 46.0 | µg/m³ | 2024-01-29 20:00 UTC |
| ES1613A | o3 | 24.0 | µg/m³ | 2024-01-29 20:00 UTC |
| ES1613A | pm10 | 26.0 | µg/m³ | 2024-01-29 20:00 UTC |
| COLMENAR VIEJO | no | 1.0 | µg/m³ | 2024-02-28 23:00 UTC |
| COLMENAR VIEJO | no2 | 11.0 | µg/m³ | 2026-02-09 14:00 UTC |
| COLMENAR VIEJO | o3 | 57.0 | µg/m³ | 2026-02-09 14:00 UTC |
| COLMENAR VIEJO | pm10 | 5.0 | µg/m³ | 2026-02-09 14:00 UTC |
| COLMENAR VIEJO | no2 | 14.0 | µg/m³ | 2026-02-09 15:00 UTC |
| COLMENAR VIEJO | o3 | 56.0 | µg/m³ | 2026-02-09 15:00 UTC |
| COLMENAR VIEJO | pm10 | 5.0 | µg/m³ | 2026-02-09 15:00 UTC |