Air quality in Breña Baja, Spain today

Mr. Duck’s Air Quality Score

Good air today for Breña Baja, 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 Breña Baja is classified as Good today. The primary pollutant identified is PM2.5. Measurements show a PM2.5 concentration of 7.0 µg/m³ and a PM10 concentration of 13.0 µg/m³. These concentrations match the reference values of 7.0 µg/m³ for PM2.5 and 13.0 µg/m³ for PM10 used in the assessment.

A total of five valid measurements were recorded and the data is shown via OpenAQ. The reporting period includes the most recent observations available for the city. No other pollutant was identified as the primary contributor. These five measurements provide the basis for the current assessment. Data quality is ensured by the OpenAQ verification process. 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 Breña Baja data set draws from a single monitoring site, identified as SAN ANTONIO‑BREÑA BAJA, and provides a snapshot for seven measured pollutants: carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm (PM10), particulate matter 2.5 µm (PM2.5) and sulfur dioxide (SO₂). Each pollutant appears as one row of data, so the overall coverage consists of seven rows representing the seven substances. All values are reported in micrograms per cubic metre (µg/m³).

Freshness varies across the series. CO, NO₂, O₃ and SO₂ were last updated on 2026‑02‑09 15:00 UTC, while the two particulate metrics were most recent on 2026‑02‑03 01:00 UTC. These timestamps fall within the past 30 days, indicating that the majority of the data is current. The exception is NO, whose latest entry dates to 2024‑02‑09 00:00 UTC and is flagged as old, showing that for this specific gas the available measurement is two years out of date.

Because each pollutant record lists identical minimum, median and maximum values, the dataset shows no observed variability within the sampled period – the range for every substance is effectively zero. The single‑site configuration also means spatial coverage is limited; conditions recorded at SAN ANTONIO‑BREÑA BAJA may not represent other parts of the municipality, and the data set does not capture temporal fluctuations beyond the single reported point for each pollutant.

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 Breña Baja includes five valid measurements and is updated within 30 days. The latest data were recorded on 2026-02-09 at 15:00 UTC. This snapshot reflects conditions at the time of sampling; air quality can vary by location and time within the city. Users should consider these factors when interpreting the values presented.

OpenAQ station rows