Air quality in Ourense, Galicia, Spain today

Mr. Duck’s Air Quality Score

Moderate air today for Ourense, Galicia, 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 Ourense today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles).

Measurements recorded by OpenAQ show a PM2.5 reference value of 17.0 and a PM10 reference value of 2.5, based on ten valid observations. 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

Ourense’s OpenAQ feed contains data for eleven measured compounds: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), sulfur dioxide (SO₂), particulate matter of three size fractions (PM₁, PM₂.5 and PM₁₀), relative humidity, temperature and a miscellaneous sensor labelled UM003. The dataset comprises 26 rows drawn from three monitoring stations, so each pollutant is not necessarily represented at every location.

The most recent observations were recorded on 2026‑02‑09 at 15:00 UTC for CO, NO₂, O₃, SO₂, PM₁₀ and PM₂.5, all supplied by the GÓMEZ FRANQUEIRA site. These six pollutants show a fairly tight temporal window, with median values of 330 µg/m³ for CO, 13 µg/m³ for NO₂, 41 µg/m³ for O₃, 1 µg/m³ for SO₂, 22.25 µg/m³ for PM₁₀ and 22.5 µg/m³ for PM₂.5. Their recorded ranges span from a low of 2.5 µg/m³ to a high of 65 µg/m³ for PM₁₀, and from 7.7 µg/m³ to 43 µg/m³ for O₃, indicating modest variability across the recent sampling period.

In contrast, NO data are older, last updated on 2024‑03‑01 at 00:00 UTC, with a single value of 8.7 µg/m³ reported from GÓMEZ FRANQUEIRA; PM₁ is even less current, dated 2025‑01‑13 at 23:00 UTC from the Escuela Superior de Ingeniería Informática and showing a constant reading of about 8.94 µg/m³. Because many rows are flagged as “old” or lack recent timestamps, the overall picture for these two pollutants is limited, and conditions in Ourense can differ across neighborhoods and over time depending on which sensor network segment is consulted.

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 Ourense includes ten valid measurements and is updated within three days, with the most recent values recorded on 2026‑02‑09 at 15:00 UTC. These figures represent a snapshot of current conditions; air quality can differ across neighborhoods and change throughout the day, so local variations may not be reflected in this summary.

OpenAQ station rows