Air quality in Guadalajara, Castile-La Mancha, Spain today
Mr. Duck’s Air Quality Score
Moderate air today for Guadalajara, Castile-La Mancha, 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 Guadalajara, Castile‑La Mancha is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 12.0 µg/m³ and a PM10 reference value of 55.554 µg/m³, based on 34 valid observations collected via OpenAQ.
These figures reflect the present assessment without implying any trend or cause. 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 Guadalajara includes six measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulfur dioxide (SO₂). All of these come from a single monitoring row, so the city’s air‑quality picture is based on one location rather than a network of stations.
The most recent observations are from 2026‑02‑09 15:00 UTC for CO, NO₂, O₃ and PM₁₀, showing that half of the pollutants have data updated within the last month. The remaining two – NO and SO₂ – are older, with their latest timestamps on 2024‑02‑13 00:00 UTC and 2023‑06‑16 05:00 UTC respectively, indicating uneven freshness across the suite. Because only one row is available, there is no spread of values; each pollutant has a single reported figure that also serves as its minimum, median and maximum. CO registers at 310 µg/m³, NO at 2 µg/m³, NO₂ at 16 µg/m³, O₃ at 46 µg/m³, PM₁₀ at 6 µg/m³ and SO₂ at 2 µg/m³. The lack of variability means the dataset cannot illustrate fluctuations over time or differences between neighbourhoods.
Overall, the coverage is limited to one monitoring point with most data refreshed in early February 2026, but two pollutants rely on older records from 2024 and 2023. Consequently, while the snapshot provides current concentrations for all six gases, it does not capture spatial diversity or recent changes that may occur elsewhere in Guadalajara.
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 Guadalajara includes 34 valid measurements and is refreshed Updated within 3 days, with the most recent data recorded on 2026‑02‑10 at 22:00 UTC. This snapshot reflects conditions captured across the monitoring network at that time; however, air quality can vary by location and moment within the city, so values may differ from what you experience locally.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| GUADALAJARA | no | 2.0 | µg/m³ | 2024-02-13 00:00 UTC |
| GUADALAJARA | no2 | 16.0 | µg/m³ | 2026-02-09 15:00 UTC |
| GUADALAJARA | o3 | 46.0 | µg/m³ | 2026-02-09 15:00 UTC |
| GUADALAJARA | pm10 | 6.0 | µg/m³ | 2026-02-09 09:00 UTC |
| GUADALAJARA | so2 | 2.0 | µg/m³ | 2023-06-16 05:00 UTC |