Air quality in Guimarães, Portugal today
Mr. Duck’s Air Quality Score
Good air today for Guimarães, Portugal
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Guimarães is currently classified as Good. The main pollutant identified is PM10, with a reference value of 19.1 µg/m³ reported from the two valid measurements used for this assessment.
Data are shown via OpenAQ and reflect the latest available readings for the city. 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 air‑quality record for Guimarães currently includes data from a single monitoring site, providing two rows of observations—one for nitrogen dioxide (NO2) and one for particulate matter ≤ 10 µm (PM10). Both pollutants were last reported on 2026-02-10 21:00 UTC, which falls within the “updated within 7 days” freshness category, so the information reflects very recent conditions at that location.
For NO2 the dataset contains a single value of 34.3 µg/m³, recorded at the Cónego Dr. Manuel Faria‑Azurém station. Because there is only one measurement, the minimum, median and maximum are all identical (34.3 µg/m³), and the 10th and 90th percentiles match this figure as well. The same pattern holds for PM10, with a solitary reading of 19.1 µg/m³ at the same site and timestamp; again the statistical spread is zero.
These numbers illustrate that the current coverage in Guimarães is limited to one monitoring point, offering no spatial variation across the city and providing only a snapshot rather than a distribution of values. While the data are fresh, the lack of multiple stations or repeated measurements means the reported concentrations represent conditions at a single location on a specific day and cannot capture broader temporal trends or differences between neighborhoods. Users should keep in mind that air quality can change throughout the day and across different parts of the city, so this snapshot offers only a narrow view of the overall environment.
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 are based on two valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10T21:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and throughout the day in Guimarães.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Cónego Dr. Manuel Faria-Azurém | no2 | 34.3 | µg/m³ | 2026-02-10 21:00 UTC |
| Cónego Dr. Manuel Faria-Azurém | pm10 | 19.1 | µg/m³ | 2026-02-10 21:00 UTC |