Worst air pollution Mollet, today and tomorrow

Today (9 August): Air quality in Mollet is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 38.9/100).
Tomorrow (10 August 2026): Air quality in Mollet is fair. PM2.5 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 34.9/100). 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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Mollet's air quality reflects the Besòs river valley in the Barcelona Vallès industrial corridor, with vehicle traffic on the AP-7 motorway and the surrounding manufacturing and logistics industry contributing elevated NOₓ and industrial PM2.5. The Collserola ridge and the Vallès pre-litoral create partial topographic enclosure, while the Barcelona Bay sea breeze provides afternoon ventilation and the industrial valley character keeps readings elevated above suburban Barcelona residential averages throughout the year.

Today - 9 August | Pollution peaks at 15:00

AQI:

Fair

38.9/100

PM2.5 (fine particles):

Good

14.6/100

PM10 (coarse particles):

Good

4.9/100

NO2 (nitrogen dioxide):

Fair

34.6/100

O3 (ozone):

Fair

38.9/100

SO2 (sulfur dioxide):

Good

5.8/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

9.9/100

PM1 (ultrafine particles):

Good

14.6/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 03:00

AQI:

Fair

34.9/100

PM2.5 (fine particles):

Fair

20.0/100

PM10 (coarse particles):

Good

6.4/100

NO2 (nitrogen dioxide):

Fair

34.9/100

O3 (ozone):

Fair

34.2/100

SO2 (sulfur dioxide):

Good

7.0/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

9.4/100

PM1 (ultrafine particles):

Fair

21.6/100

Pollen forecast in Mollet

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Frequently Asked Questions

Is air quality bad in Mollet right now?

On 9 August 2026, overall air quality in Mollet is fair. AQI is the main air quality indicator at 38.9/100. Pollution peaks around 3:00 PM (O3: 38.9/100).

Will air quality be worse tomorrow in Mollet?

On 10 August 2026, air quality conditions in Mollet will be similar to today, with AQI forecast at fair at 34.9/100. Pollution peaks around 3:00 AM (NO2: 34.9/100).

When is air pollution at its worst in Mollet?

What time of year has the cleanest air in Mollet? Winter tends to bring the year's weakest readings, as stagnant, cold air lets heating smoke and vehicle emissions build up rather than clear away. As spring progresses, wetter and windier conditions generally help flush out the traffic and heating pollution that built up over winter. Summer brings its own challenge in the form of ground-level ozone, which forms readily under strong sunshine and high temperatures, particularly during heatwaves. Autumn generally marks the shift back toward calmer, cleaner conditions as temperatures drop and rainfall becomes more regular. The mild, breezy Mediterranean climate generally supports good dispersal, though summer crowds and Saharan dust intrusions can occasionally push levels higher.

Are air quality levels in Mollet 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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