Worst air pollution Paços de Ferreira, today and tomorrow
Today (20 September): Air quality in Paços de Ferreira is fair. AQI and PM1 are fair; PM2.5, PM10, NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 8:00 AM (PM1: 23.2/100).
Tomorrow (21 September 2026): Air quality in Paços de Ferreira is fair. O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 20.5/100). Airmine updates local air quality forecasts four times daily.
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Paços de Ferreira's air quality reflects the Ave valley in Porto's northeastern metropolitan corridor, with vehicle traffic on the A42 and the surrounding furniture, cork, and metalworking manufacturing contributing local sources. Atlantic westerlies generally provide maritime ventilation, while the surrounding Ave and Sousa valley hills create topographic variation and the manufacturing operations — Paços de Ferreira being Portugal's furniture capital — add distinctive wood dust and lacquer VOC emissions to the local air quality profile.
Today - 20 September | Pollution peaks at 08:00
AQI:
Fair
23.2/100
PM2.5 (fine particles):
Good
12.2/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Good
12.3/100
O3 (ozone):
Good
19.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Fair
23.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 15:00
AQI:
Fair
20.5/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Good
12.2/100
O3 (ozone):
Fair
20.5/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
16.2/100
Pollen forecast in Paços de Ferreira
View pollen forecastFrequently Asked Questions
Is air quality bad in Paços de Ferreira right now?
On 20 September 2026, overall air quality in Paços de Ferreira is fair. AQI is the main air quality indicator at 23.2/100. Pollution peaks around 8:00 AM (PM1: 23.2/100).
Will air quality be worse tomorrow in Paços de Ferreira?
On 21 September 2026, air quality conditions in Paços de Ferreira will be similar to today, with AQI forecast at fair at 20.5/100. Pollution peaks around 3:00 PM (O3: 20.5/100).
When is air pollution at its worst in Paços de Ferreira?
Air quality dips in Paços de Ferreira mostly track local tree and grass allergens peaks and periods of vehicle traffic on the A42 and the local furniture, cork, and metalworking manufacturing; the clearest air tends to follow a change in wind direction or rainfall here.
Are air quality levels in Paços de Ferreira 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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