Worst air pollution Pola de Siero, today and tomorrow
Today (16 July): Air quality in Pola de Siero 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 Pola de Siero 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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Pola de Siero's air quality reflects the Asturian mining valley position in the central Asturian corridor, with vehicle traffic on the A-64 and the surrounding former coal mining and manufacturing legacy contributing local sources. Atlantic westerlies from the Bay of Biscay generally provide maritime ventilation, while the surrounding Cantabrian mountains create topographic variation and the declining Asturian heavy industry has progressively improved readings compared to the active mining era throughout the year.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
8.7/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Fair
20.2/100
O3 (ozone):
Fair
33.2/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
6.6/100
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
5.5/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Good
11.3/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
4.0/100
Pollen forecast in Pola de Siero
View pollen forecastFrequently Asked Questions
Is air quality bad in Pola de Siero right now?
On 16 July 2026, overall air quality in Pola de Siero 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 Pola de Siero?
On 17 July 2026, air quality conditions in Pola de Siero 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 Pola de Siero?
When is air quality typically worst in Pola de Siero? The year's lowest air quality readings tend to cluster in winter, when high-pressure systems suppress the mixing that would otherwise clear away exhaust and smoke. Spring is typically a transitional season, as milder, windier weather starts clearing out the pollutants that accumulate during winter's calm spells. Summer readings are shaped mainly by ozone, which builds under strong sun and heat, sometimes worsened by drifting wildfire smoke. Autumn usually sees a steady return to cleaner conditions as the ozone-favouring heat of summer fades and rainfall picks up. Frequent Atlantic weather systems mean pollution rarely has the chance to accumulate for long stretches in this area.
Are air quality levels in Pola de Siero 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