Worst air pollution Amarante, today and tomorrow
Today (20 September): Air quality in Amarante 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: 25.2/100).
Tomorrow (21 September 2026): Air quality in Amarante is good. AQI improves to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 19.6/100). 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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Amarante's air quality reflects the Tâmega river valley in the Porto metropolitan area's eastern corridor at 93 metres, with vehicle traffic on the A4 motorway and the surrounding granite quarrying, agribusiness, and wine operations contributing local sources. The Marão and Aboboreira mountains create significant topographic variation, while Atlantic westerlies generally provide ventilation through the Tâmega valley and the quarrying operations add distinctive granite dust PM10 to the local air quality profile throughout the year.
Today - 20 September | Pollution peaks at 08:00
AQI:
Fair
25.2/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Good
12.2/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Fair
25.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 15:00
AQI:
Good
19.6/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Good
12.1/100
O3 (ozone):
Good
19.6/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
18.1/100
Pollen forecast in Amarante
View pollen forecastFrequently Asked Questions
Is air quality bad in Amarante right now?
On 20 September 2026, overall air quality in Amarante is fair. AQI is the main air quality indicator at 25.2/100. Pollution peaks around 8:00 AM (PM1: 25.2/100).
Will air quality be worse tomorrow in Amarante?
On 21 September 2026, air quality conditions in Amarante will be better than today, with AQI forecast at good at 19.6/100. Pollution peaks around 3:00 PM (O3: 19.6/100).
When is air pollution at its worst in Amarante?
You're likeliest to notice worse air in Amarante when highland woodland oak and pine pollen peaks, or due to vehicle traffic on the A4 motorway and the nearby granite quarrying, agribusiness, and wine operations; cooler, breezier weather later in the year tends to bring things back down.
Are air quality levels in Amarante 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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