Worst air pollution Colmenar Viejo, today and tomorrow
Today (16 July): Air quality in Colmenar Viejo is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 37.6/100).
Tomorrow (17 July 2026): Air quality in Colmenar Viejo is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 6:00 PM (O3: 40.4/100). 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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Colmenar Viejo's air quality benefits from its elevated northern Madrid sierra position at 877 metres in the Monte de El Pardo foothills, with the Sierra de Guadarrama's clean northwesterly airflows providing generally better conditions than the central Madrid basin. Vehicle traffic on the M-607 national road is the primary local source, while the elevated mountain position and the surrounding El Pardo woodland park generally help avoid the worst of Madrid's winter temperature inversion accumulation throughout the year.
Today - 16 July | Pollution peaks at 18:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.6/100
PM1 (ultrafine particles):
Good
5.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
7.2/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
4.1/100
Pollen forecast in Colmenar Viejo
View pollen forecastFrequently Asked Questions
Is air quality bad in Colmenar Viejo right now?
On 16 July 2026, overall air quality in Colmenar Viejo is fair. AQI is the main air quality indicator at 37.6/100. Pollution peaks around 6:00 PM (O3: 37.6/100).
Will air quality be worse tomorrow in Colmenar Viejo?
On 17 July 2026, air quality conditions in Colmenar Viejo will be better than today, with AQI forecast at medium at 40.4/100. Pollution peaks around 6:00 PM (O3: 40.4/100).
When is air pollution at its worst in Colmenar Viejo?
How does air quality change throughout the year in Colmenar Viejo? 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. Early autumn can still bring warm, stagnant spells before the season's returning rain and wind begin clearing the air. Away from the moderating effect of the sea, this area experiences starker seasonal air quality swings than coastal Spain.
Are air quality levels in Colmenar Viejo 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