Worst air pollution Paredes, today and tomorrow
Today (20 September): Air quality in Paredes is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 8:00 AM (PM1: 25.9/100).
Tomorrow (21 September 2026): Air quality in Paredes is fair. PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 22.5/100). 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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Paredes' air quality reflects the greater Porto metropolitan area's northeastern corridor, with vehicle traffic on the A42 and surrounding granite quarrying, furniture, and automotive parts manufacturing contributing local sources. Atlantic westerlies generally provide maritime ventilation, while the surrounding Douro valley hills create topographic variation and the granite quarrying operations add distinctive stone dust PM10 that makes Paredes one of northern Portugal's more industrially distinctive municipalities.
Today - 20 September | Pollution peaks at 08:00
AQI:
Fair
25.9/100
PM2.5 (fine particles):
Good
11.6/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Good
10.7/100
O3 (ozone):
Fair
21.6/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Fair
25.9/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 15:00
AQI:
Fair
22.5/100
PM2.5 (fine particles):
Good
10.8/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Good
10.7/100
O3 (ozone):
Fair
22.5/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
18.7/100
Pollen forecast in Paredes
View pollen forecastFrequently Asked Questions
Is air quality bad in Paredes right now?
On 20 September 2026, overall air quality in Paredes is fair. AQI is the main air quality indicator at 25.9/100. Pollution peaks around 8:00 AM (PM1: 25.9/100).
Will air quality be worse tomorrow in Paredes?
On 21 September 2026, air quality conditions in Paredes will be similar to today, with AQI forecast at fair at 22.5/100. Pollution peaks around 3:00 PM (O3: 22.5/100).
When is air pollution at its worst in Paredes?
People in Paredes tend to notice reduced air quality when oak and eucalyptus pollen peaks, or because of vehicle traffic on the A42 and surrounding granite quarrying, furniture, and automotive parts manufacturing; the rest of the calendar year is generally more forgiving for air quality.
Are air quality levels in Paredes 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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