Worst air pollution Guadalajara, today and tomorrow
Today (9 August): Air quality in Guadalajara is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 5:00 PM (O3: 38.1/100).
Tomorrow (10 August 2026): Air quality in Guadalajara is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 36.1/100). 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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Guadalajara's air quality in Spain reflects its position in the enclosed Henares river valley at the eastern edge of the Madrid metropolitan area, with vehicle traffic on the A-2 national road and the massive INTU shopping and logistics complex generating concentrated vehicle emissions alongside the commuter traffic corridor. The Madrid metropolitan basin's winter temperature inversion problem extends eastward to affect the Henares valley, while the Castilian Meseta provides some dispersal on windy days throughout the year.
Today - 9 August | Pollution peaks at 17:00
AQI:
Fair
38.1/100
PM2.5 (fine particles):
Good
16.3/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
15.3/100
O3 (ozone):
Fair
38.1/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Fair
20.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Fair
36.1/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Good
19.5/100
O3 (ozone):
Fair
36.1/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Fair
22.1/100
Pollen forecast in Guadalajara
View pollen forecastFrequently Asked Questions
Is air quality bad in Guadalajara right now?
On 9 August 2026, overall air quality in Guadalajara is fair. AQI is the main air quality indicator at 38.1/100. Pollution peaks around 5:00 PM (O3: 38.1/100).
Will air quality be worse tomorrow in Guadalajara?
On 10 August 2026, air quality conditions in Guadalajara will be similar to today, with AQI forecast at fair at 36.1/100. Pollution peaks around 5:00 PM (O3: 36.1/100).
When is air pollution at its worst in Guadalajara?
How do the seasons affect air quality in Guadalajara? Air quality is typically at its weakest in December and January, when cold, calm high-pressure spells trap traffic exhaust and wood-smoke close to the ground instead of letting it disperse. Conditions generally start to recover in spring, as increasing wind and rainfall break up the stagnant air masses typical of winter. Summer can bring periodic wildfire smoke on top of the usual ozone build-up from intense heat and sunshine. Autumn is typically a recovery period, with increasing rainfall and cooler air gradually reducing both ozone and traffic-related pollution. Being inland, this area sees more extreme summer heat and winter cold, which sharpens the seasonal contrast in air quality.
Are air quality levels in Guadalajara 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: 10 August 2026 at 02:34 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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