Air quality in Portimão, Portugal today
Mr. Duck’s Air Quality Score
Good air today for Portimão, Portugal
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
Today the air quality in Portimão is classified as Good. The primary pollutant identified is PM10, based on two valid measurements reported for the day. The assessment follows the Duck scoring methodology, which combines the available data into the overall category.
The reference value for PM10 is 16.5 µg/m³, and the current readings fall within the range that supports the Good classification. No reference value is available for PM2.5 at this time. All data are shown via OpenAQ, which aggregates measurements from participating monitoring stations. The two measurements were taken on the same day and represent the latest available data. 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 Portimão air‑quality feed draws from a single monitoring site that contributed three data rows. All three pollutants tracked by the OpenAQ network—carbon monoxide (CO), nitrogen dioxide (NO₂) and particulate matter ≤ 10 µm (PM₁₀)—are represented in the export, but the depth of information differs across them. Two of the rows fall into the “updated within the last 30 days” bucket, while one row is classified as “old” according to the source timestamps.
Carbon monoxide is listed but every numeric field for this pollutant shows the placeholder value ‑1000.0 µg/m³, indicating that the sensor did not provide a usable measurement at the time of reporting. Nitrogen dioxide appears with a single recorded concentration of 28.8 µg/m³, reported by the same contributor on 2026‑01‑24 11:00 UTC; this entry is the only “old” record in the set, and because the minimum, median and maximum are identical, no variation can be inferred from the data. Particulate matter PM₁₀ is the most recent observation, recorded on 2026‑02‑10 21:00 UTC with a value of 16.5 µg/m³, and likewise shows a uniform min‑med‑max profile, reflecting a single snapshot rather than a range of measurements.
Overall, the dataset offers limited temporal coverage for Portimão: only three rows, all from one station, with two recent timestamps and one older entry. The CO column contains placeholder data, NO₂ provides a single older reading, and PM₁₀ supplies the freshest snapshot. Because the values are singular and the timestamps are uneven, the current record cannot capture the full day‑to‑day or intra‑city variability that may exist, and users should keep in mind that conditions can differ across locations and times not represented here.
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
This dataset contains two valid measurements and is updated within 30 days, with the most recent reading recorded on 2026-02-10 at 21:00 UTC. The data reflect conditions at the time of collection and are subject to change. Please note that air quality can vary by location and time within Portimão, so this snapshot may not represent the entire city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| David Neto | no2 | 28.8 | µg/m³ | 2026-01-24 11:00 UTC |
| David Neto | pm10 | 16.5 | µg/m³ | 2026-02-10 21:00 UTC |