Air quality in Madrid, Community of Madrid, Spain today

Mr. Duck’s Air Quality Score

Good air today for Madrid, Community of Madrid, Spain

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Madrid today falls into the Good category according to OpenAQ data. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 2.70 µg/m³ and a PM10 reference value of 24.0 µg/m³, based on 74 valid observations.

Overall conditions are assessed as Good with the specified particulate levels. 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 OpenAQ feed for Madrid includes data on carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO2), ozone (O3), particulate matter of three size fractions (PM1, PM2.5 and PM10), sulfur dioxide (SO2) as well as auxiliary variables such as temperature, relative humidity and a miscellaneous sensor labelled UM003. The dataset comprises 131 rows from 29 monitoring stations across the Community of Madrid, giving a fairly broad spatial coverage for most pollutants. However, the number of recent records varies: CO, SO2 and NO each have nine rows with the latest update on 2026‑02‑09, while O3, PM10 and NO2 have fourteen to seventeen rows refreshed on the same day. The freshest timestamps are from early February 2026 (e.g., 2026‑02‑10 20:00 UTC for PM2.5, PM1 and PM2.5), whereas the oldest entry is a NO measurement dated 2024‑03‑05 00:00 UTC, indicating that some older data still remain in the feed.

Across the pollutants, measured values show considerable spread. NO ranges from 1 to 7 µg/m³ with a median of 1 µg/m³, while NO2 spans 10–48 µg/m³ and centers around 33.5 µg/m³. Ozone levels vary between 31 and 63 µg/m³, median 47 µg/m³. Particulate matter is especially heterogeneous: PM10 values run from 0 to about 24 µg/m³ (median 5 µg/m³), PM2.5 from 0 to roughly 36.6 µg/m³ (median 3.5 µg/m³) and PM1 from 0.85 to 24 µg/m³ (median 1.77 µg/m³). CO is reported at a constant 200 µg/m³ in the most recent row, with an upper value of 300 µg/m³, while SO2 stays low between 1 and 3 µg/m³ (median 3 µg/m³).

Because the dataset contains a mix of very recent and older observations, the picture it paints is necessarily partial. Some stations provide up‑to‑date readings for most pollutants, but others contribute only legacy data, especially for NO. Consequently, air quality conditions in Madrid can differ noticeably between neighborhoods and over time, and any single snapshot should be interpreted as one piece of a larger, evolving dataset.

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 Madrid includes 74 valid measurements and is updated within 3 days, with the latest values recorded on 2026‑02‑10 at 20:00 UTC. These figures represent a recent snapshot of ambient conditions across the city; however, air quality can differ by neighbourhood and change throughout the day, so individual experiences may vary from the reported averages.

OpenAQ station rows