Mollet Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (11 October): Air quality in Mollet is moderate. AQI and NO2 are moderate; PM2.5 is fair; PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 42.3/100).
Air Quality Tomorrow
Tomorrow (12 October 2026): Air quality in Mollet is moderate. PM2.5 increases to moderate; PM10 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 48.6/100).
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Air Quality
Today - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Moderate | 42.3/100 |
| PM2.5 (fine particles) | Fair | 39.2/100 |
| PM10 (coarse particles) | Good | 19.8/100 |
| NO2 (nitrogen dioxide) | Moderate | 42.3/100 |
| O3 (ozone) | Good | 11.9/100 |
| SO2 (sulfur dioxide) | Good | 3.9/100 |
| CO (carbon monoxide) | Good | 0.8/100 |
| HCHO (formaldehyde) | Good | 9.9/100 |
| PM1 (ultrafine particles) | Good | 17.1/100 |
Tomorrow - 12 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Moderate | 48.6/100 |
| PM2.5 (fine particles) | Moderate | 42.1/100 |
| PM10 (coarse particles) | Fair | 25.7/100 |
| NO2 (nitrogen dioxide) | Moderate | 48.6/100 |
| O3 (ozone) | Good | 15.1/100 |
| SO2 (sulfur dioxide) | Good | 3.8/100 |
| CO (carbon monoxide) | Good | 0.8/100 |
| HCHO (formaldehyde) | Good | 8.9/100 |
| PM1 (ultrafine particles) | Fair | 20.8/100 |
Local Environmental Conditions
Around the heart of Mollet, dense development means road traffic is the main local source of nitrogen dioxide and fine particles. Its setting in a valley means cold air and pollution can get trapped close to the ground during calm spells. Local sources include freight transport and manufacturing. Pockets of trees and green space help filter a small share of the particles from traffic.
Calm, cold weather from December to February, averaging 10°C, lets the valley fill with pollution from home heating and traffic overnight. In the warmer months, warm, sunny weather from June to September, around 26°C at its peak, raises afternoon ozone levels. March is usually the windiest month, averaging about 15 km/h, which helps keep the air clean.
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Frequently Asked Questions About Air Quality in Catalonia
Is air quality bad in Mollet right now?
On 11 October 2026, overall air quality in Mollet is moderate. AQI is the main air quality indicator at 42.3/100. Pollution peaks around 12:00 AM (NO2: 42.3/100).
Will air quality be worse tomorrow in Mollet?
On 12 October 2026, air quality conditions in Mollet will be similar to today, with AQI forecast at moderate at 48.6/100. Pollution peaks around 9:00 PM (NO2: 48.6/100).
When is air pollution at its worst in Mollet?
Calm, cold weather from December to February, averaging 10°C, lets the valley fill with pollution from home heating and traffic overnight. In the warmer months, warm, sunny weather from June to September, around 26°C at its peak, raises afternoon ozone levels. March is usually the windiest month, averaging about 15 km/h, which helps keep the air clean.
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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |