Worst air pollution Santander, today and tomorrow
Today (9 August): Air quality in Santander is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 36.8/100).
Tomorrow (10 August 2026): Air quality in Santander is fair. All pollutants stay as today. Pollution peaks around 6:00 PM (O3: 31.8/100). 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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Santander's air quality benefits from its exceptional Cantabrian Sea coastal position, with consistent Atlantic northerly and westerly maritime winds providing some of Spain's most reliable natural ventilation along the Bay of Biscay. Vehicle traffic on the A-67 and the port's ferry operations to the UK generate local emissions, while the enclosed Bahía de Santander creates topographic variation between the open seafront and the more sheltered harbour areas, and the Atlantic coastal position generally maintains Santander among Spain's better urban air quality environments.
Today - 9 August | Pollution peaks at 15:00
AQI:
Fair
36.8/100
PM2.5 (fine particles):
Good
6.7/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Good
5.6/100
O3 (ozone):
Fair
36.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 18:00
AQI:
Fair
31.8/100
PM2.5 (fine particles):
Good
6.6/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
5.1/100
O3 (ozone):
Fair
31.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
4.5/100
Pollen forecast in Santander
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Santander
Frequently Asked Questions
Is air quality bad in Santander right now?
On 9 August 2026, overall air quality in Santander is fair. AQI is the main air quality indicator at 36.8/100. Pollution peaks around 3:00 PM (O3: 36.8/100).
Will air quality be worse tomorrow in Santander?
On 10 August 2026, air quality conditions in Santander will be similar to today, with AQI forecast at fair at 31.8/100. Pollution peaks around 6:00 PM (O3: 31.8/100).
When is air pollution at its worst in Santander?
What time of year has the cleanest air in Santander? 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 when conditions begin improving, as increasing wind speeds help disperse traffic emissions before they can accumulate. Summer readings are shaped mainly by ozone, which builds under strong sun and heat, sometimes worsened by drifting wildfire smoke. The first rains of autumn typically help clear out any lingering summer dust or ozone, setting up milder conditions ahead of winter. Being close to the Atlantic, this area benefits from regular rainfall and wind that help keep pollution from building up for long.
Are air quality levels in Santander 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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