Worst air pollution Oviedo, today and tomorrow
Today (16 July): Air quality in Oviedo is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 33.2/100).
Tomorrow (17 July 2026): Air quality in Oviedo is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 27.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Oviedo's air quality has improved substantially since the decline of the Asturian coal mining and steel industries, but the Nalón-Caudal valley's enclosed Cantabrian topography continues to create topographic concentration of vehicle and remaining industrial emissions under calm conditions. Atlantic westerlies from the Bay of Biscay provide the primary ventilation, while the surrounding Cantabrian mountains create significant topographic variation between the sheltered valley floor and the more exposed hillside areas across the Oviedo metropolitan area.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
23.1/100
O3 (ozone):
Fair
33.2/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
27.6/100
PM2.5 (fine particles):
Good
5.9/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
13.5/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
4.3/100
Pollen forecast in Oviedo
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Oviedo
Frequently Asked Questions
Is air quality bad in Oviedo right now?
On 16 July 2026, overall air quality in Oviedo is fair. AQI is the main air quality indicator at 33.2/100. Pollution peaks around 5:00 PM (O3: 33.2/100).
Will air quality be worse tomorrow in Oviedo?
On 17 July 2026, air quality conditions in Oviedo will be similar to today, with AQI forecast at fair at 27.6/100. Pollution peaks around 2:00 PM (O3: 27.6/100).
When is air pollution at its worst in Oviedo?
When is air quality typically worst in Oviedo? The coldest months usually see the year's poorest conditions, since calm anticyclonic weather holds local traffic and wood-burning pollution near street level. March through May tends to see steady improvement, with more unsettled weather patterns helping disperse traffic and heating pollution. During summer, strong sunlight and high temperatures accelerate ozone formation, occasionally offsetting the drop in traffic and heating-related emissions. The first rains of autumn typically help clear out any lingering summer dust or ozone, setting up milder conditions ahead of winter. This region's wetter, windier Atlantic climate generally keeps annual air quality more consistent than in Spain's drier interior and south.
Are air quality levels in Oviedo based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app