Worst air pollution Casco Antiguo (Santander) - Santander, today and tomorrow
Today (16 July): Air quality in Casco Antiguo (Santander) is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 32.0/100).
Tomorrow (17 July 2026): Air quality in Casco Antiguo (Santander) is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 29.1/100). 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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In Casco Antiguo (Santander), local traffic and light industry in some towns play the biggest role locally. Levels stay low most of the year, with brief dips during still, foggy spells. Constant Atlantic wind generally prevents pollution from building up locally.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
32.0/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
5.1/100
NO2 (nitrogen dioxide):
Good
7.3/100
O3 (ozone):
Fair
32.0/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
29.1/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
5.1/100
O3 (ozone):
Fair
29.1/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
4.4/100
Other Landmarks in Santander
Frequently Asked Questions
Is air quality bad in Casco Antiguo (Santander) right now?
On 16 July 2026, overall air quality in Casco Antiguo (Santander) is fair. AQI is the main air quality indicator at 32.0/100. Pollution peaks around 4:00 PM (O3: 32.0/100).
Will air quality be worse tomorrow in Casco Antiguo (Santander)?
On 17 July 2026, air quality conditions in Casco Antiguo (Santander) will be similar to today, with AQI forecast at fair at 29.1/100. Pollution peaks around 2:00 PM (O3: 29.1/100).
When is air pollution at its worst in Casco Antiguo (Santander)?
When is air quality typically worst in Casco Antiguo (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. Conditions tend to ease in spring, as more active weather systems bring the wind and rain needed to disperse ground-level pollution. Summer can bring periodic wildfire smoke on top of the usual ozone build-up from intense heat and sunshine. Early autumn can still bring warm, stagnant spells before the season's returning rain and wind begin clearing the air. The Atlantic north's frequent rain and strong onshore winds generally keep year-round levels lower than in the drier interior and south.
Are air quality levels in Casco Antiguo (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.
Want to see air quality forecasts for other cities in Spain?
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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