Highest air pollution Portimão, today and tomorrow
Today (29 June): Air quality in Portimão is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 34.0/100).
Tomorrow (30 June 2026): Air quality in Portimão is fair. All pollutants stay as today. Pollution peaks around 8:00 PM (O3: 31.5/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Portimão's air quality benefits from its exceptional Algarve Atlantic Ocean and Arade estuary coastal position, with consistent Atlantic and Mediterranean westerlies providing reliable maritime ventilation across this major Algarve resort and marina city. Vehicle traffic on the A22 Via do Infante and tourism operations are the primary local sources, while the outstanding Atlantic coastal exposure and the Arade estuary's open geometry generally maintain Portimão among the Algarve's cleaner coastal urban environments throughout most of the year.
Today - 29 June | Pollution peaks at 11:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
11.6/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
7.4/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 20:00
AQI:
Fair
31.5/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
31.5/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
6.2/100
Pollen forecast in Portimão
View pollen forecastFrequently Asked Questions
Is air quality bad in Portimão right now?
On 29 June 2026, overall air quality in Portimão is fair. AQI is the main air quality indicator at 34.0/100. Pollution peaks around 11:00 AM (O3: 34.0/100).
Will air quality be worse tomorrow in Portimão?
On 30 June 2026, air quality conditions in Portimão will be similar to today, with AQI forecast at fair at 31.5/100. Pollution peaks around 8:00 PM (O3: 31.5/100).
Are air quality levels in Portimão 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.
Want to see air quality forecasts for other cities in Portugal?
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Data provided by Airmine — Last update: 29 June 2026 at 18:37 CET (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.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team