Air quality in Oviedo, Asturias, Spain today

Mr. Duck’s Air Quality Score

Moderate air today for Oviedo, Asturias, 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 Oviedo today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 33.0 and a PM10 reference value of 117.0, based on sixteen valid observations collected via OpenAQ.

These figures provide a snapshot of the current atmospheric conditions in Oviedo, Asturias, Spain. 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 Oviedo air‑quality dataset contains measurements for ten pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 1 (PM₁), PM₂.₅, PM₁₀, sulfur dioxide (SO₂), as well as relative humidity, temperature and a miscellaneous variable (UM003). The data come from 31 individual rows recorded at five monitoring stations across the city.

The most recent observations are generally very fresh: CO, NO₂, O₃, PM₁₀, SO₂, PM₂.₅ and PM₁ all have their latest values logged on 2026‑02‑09 15:00 UTC (PM₁ is slightly older at 2026‑01‑22 07:00 UTC). NO is the exception, with its newest entry dated 2024‑01‑31 00:00 UTC, making it the oldest among the currently available pollutants. Across all rows, 19 entries are less than three days old, five are between three and seven days old, while seven remain older than a week.

The recorded values show a wide spread for several gases. CO ranges from 210 µg/m³ up to 960 µg/m³, with a median of 620 µg/m³; NO varies between 5.2 µg/m³ and 71 µg/m³ (median 40 µg/m³); NO₂ spans 8 µg/m³ to 75 µg/m³ (median 33 µg/m³). Ozone peaks at 55 µg/m³, whereas SO₂ stays low between 2 and 30 µg/m³ (median 5.3 µg/m³). Particulate matter shows the greatest contrast: PM₁₀ values are as low as 3 µg/m³ and as high as 117 µg/m³ (median 7 µg/m³), while PM₂.₅ ranges from just over 1 µg/m³ to 33 µg/m³ (median 2 µg/m³). The single PM₁ measurement is 0.8333333333333334 µg/m³.

Overall, the dataset provides a fairly recent snapshot for most pollutants, but coverage is uneven – NO’s data are notably older and only one PM₁ reading exists. Because observations come from a limited number of stations, conditions can differ across neighborhoods and times not captured by the latest timestamps.

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 Oviedo includes 16 valid measurements and is Updated within 3 days, with the most recent data recorded on 2026‑02‑09 at 15:00 UTC. While this snapshot reflects current conditions across the monitoring network, air quality can differ by specific neighbourhoods and times of day within the city, so local variations may not be captured in these figures.

OpenAQ station rows