Air quality in Bailén, Andalusia, Spain today
Mr. Duck’s Air Quality Score
Good air today for Bailén, Andalusia, 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 Bailén today is classified as Good. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 value of 5.2 and a PM10 value of 5.25, based on five valid observations reported through OpenAQ.
Overall conditions meet the criteria for the Good category according to the latest assessment. 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 Bailén air‑quality record draws from a single monitoring station that supplies seven pollutant measurements. All of the standard urban contaminants are represented: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). Because the dataset contains only one station, each pollutant appears in a single row, giving a total of seven rows of data.
Freshness varies across the suite. The most recent updates for CO, NO₂, O₃, PM₁₀, PM₂.₅ and SO₂ were recorded on 2026‑02‑09 at 03:00 UTC, which places them well within a seven‑day window and qualifies them as current. In contrast, the NO measurement is dated 2024‑02‑21 at 00:00 UTC, making it older than two years and the only value flagged as “old” in the collection. This uneven timing means that while most pollutants reflect near‑real‑time conditions, nitrogen oxide data are considerably outdated.
All reported concentrations are identical to their minimum, median and maximum values, indicating a single snapshot rather than a range of observations. CO registers at 245 µg/m³, NO at 2 µg/m³, NO₂ at 1 µg/m³, O₃ at 78 µg/m³, PM₁₀ at 5.25 µg/m³, PM₂.₅ at 5.2 µg/m³ and SO₂ at 6 µg/m³. Because each pollutant has only one recorded value, there is no spread to describe variability over time or across locations within Bailén. Consequently, while the dataset provides a clear snapshot of current air‑quality levels for most pollutants, the limited station coverage and the dated NO reading mean that city conditions could differ in other neighborhoods or at other times.
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 Bailén are based on five valid measurements and were updated within three days, with the latest reading recorded at 2026‑02‑09T03:00:00+00:00. This snapshot reflects conditions at specific monitoring points and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| BAILÉN | no | 2.0 | µg/m³ | 2024-02-21 00:00 UTC |
| BAILÉN | no2 | 1.0 | µg/m³ | 2026-02-09 03:00 UTC |
| BAILÉN | o3 | 78.0 | µg/m³ | 2026-02-09 03:00 UTC |
| BAILÉN | pm10 | 5.25 | µg/m³ | 2026-02-09 03:00 UTC |
| BAILÉN | pm25 | 5.2 | µg/m³ | 2026-02-09 03:00 UTC |
| BAILÉN | so2 | 6.0 | µg/m³ | 2026-02-09 03:00 UTC |