Air quality in Barakaldo, Autonomous Community of the Basque Country, Spain today

Mr. Duck’s Air Quality Score

Good air today for Barakaldo, Autonomous Community of the Basque Country, 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 Barakaldo today is classified as Good. According to the latest data, this rating reflects concentrations that are within the established reference limits. The primary pollutant identified is PM2.5. PM2.5 and PM10 are categories of fine particulate matter that are routinely monitored in urban environments. The reference value for PM2.5 is 8.0 µg/m³, and the reference value for PM10 is 4.0 µg/m³. Five valid observations were recorded at different monitoring points across the city, providing spatial representation. These figures are based on those five valid measurements taken during the reporting period, and their consistency with the reference thresholds supports the Good classification. Data is shown via OpenAQ. 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 Barakaldo air‑quality record consists of 13 measurement rows collected by four monitoring sites. Through OpenAQ the dataset provides values for carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5) and sulphur dioxide (SO₂). Most of the recent observations come from the BARAKALDO station, while O₃ is reported from CASTREJANA and NO from the ES1712A site.

Across the whole set, six rows have been updated within the last 30 days and the remaining seven are older, so the overall freshness is mixed. CO shows the broadest variability, ranging from 170 µg/m³ at its lowest to 660 µg/m³ at its peak, with a median of 415 µg/m³, indicating a wide spread of concentrations. By contrast, NO₂ values are tightly clustered between 19 and 22 µg/m³, with a median of 20.5 µg/m³, and SO₂ stays between 5 and 6 µg/m³ (median 5.5 µg/m³). PM10 measurements span 4 to 21 µg/m³ (median 12.5 µg/m³) and PM2.5 range from 8 to 16 µg/m³ (median 12 µg/m³), both showing moderate dispersion. O₃ values sit between 57 and 63 µg/m³, median 60 µg/m³, reflecting a relatively narrow band. The NO data point is a single zero reading from 2024‑01‑16 23:00 UTC, making it the oldest and only historic entry for that pollutant.

Because the city’s monitoring network is limited to four stations, the spatial picture is uneven: most pollutants rely on the BARAKALDO sensor, O₃ is captured at a different location, and NO is represented by an outdated single record. Consequently, while recent data give a snapshot of current conditions for most species, the limited station count and the mix of fresh and older rows mean that air‑quality conditions can still vary across neighborhoods and over time.

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 Barakaldo includes five valid measurements and is updated within 30 days. The latest data were recorded on 2026-02-09 at 15:00 UTC. Air quality can vary by location and time within the city, so this snapshot may not reflect conditions everywhere.

OpenAQ station rows