Worst air pollution Alcorcón, today and tomorrow
Today (9 August): Air quality in Alcorcón is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 34.2/100).
Tomorrow (10 August 2026): Air quality in Alcorcón is fair. All pollutants stay as today. Pollution peaks around 4:00 PM (O3: 35.6/100). Airmine updates local air quality forecasts four times daily.
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Alcorcón's air quality reflects its position in the southwestern Madrid metropolitan area, with vehicle traffic on the A-5 and M-506 motorways and the surrounding residential and light industrial character contributing elevated NOₓ. The Madrid metropolitan basin's winter temperature inversion problem affects the entire southern ring, while the flat Castilian Meseta provides some dispersal on southerly wind days, and Alcorcón's dense suburban character and motorway corridor proximity keep readings consistently above the broader Castilian rural background throughout the year.
Today - 9 August | Pollution peaks at 15:00
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Good
16.7/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
2.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Fair
22.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 16:00
AQI:
Fair
35.6/100
PM2.5 (fine particles):
Good
19.4/100
PM10 (coarse particles):
Good
6.9/100
NO2 (nitrogen dioxide):
Good
19.7/100
O3 (ozone):
Fair
35.6/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Fair
22.2/100
Pollen forecast in Alcorcón
View pollen forecastFrequently Asked Questions
Is air quality bad in Alcorcón right now?
On 9 August 2026, overall air quality in Alcorcón is fair. AQI is the main air quality indicator at 34.2/100. Pollution peaks around 3:00 PM (O3: 34.2/100).
Will air quality be worse tomorrow in Alcorcón?
On 10 August 2026, air quality conditions in Alcorcón will be similar to today, with AQI forecast at fair at 35.6/100. Pollution peaks around 4:00 PM (O3: 35.6/100).
When is air pollution at its worst in Alcorcón?
What is the yearly air quality pattern like in Alcorcón? Air quality often reaches its yearly low in the depths of winter, when still, cold air holds local emissions from traffic and heating close to ground level. Spring generally sees a gradual recovery, driven by more frequent rain showers and stronger breezes that prevent pollutants from settling. Summer readings are shaped mainly by ozone, which builds under strong sun and heat, sometimes worsened by drifting wildfire smoke. Autumn typically starts mild and can still see occasional ozone or dust episodes before rain and cooler temperatures gradually restore cleaner conditions. Away from the moderating effect of the sea, this area experiences starker seasonal air quality swings than coastal Spain.
Are air quality levels in Alcorcón 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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