Worst air pollution Loulé, today and tomorrow

Today (21 July): Air quality in Loulé is fair. PM2.5 is fair; AQI and O3 are medium; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 56.0/100).
Tomorrow (22 July 2026): Air quality in Loulé is medium. PM2.5 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (O3: 40.5/100). 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

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Loulé's air quality benefits from its inland Algarve position at 160 metres in the Barrocal limestone hills, with consistent Atlantic and Mediterranean sea breezes from the nearby Faro coast providing reliable maritime ventilation. Vehicle traffic on the A22 Via do Infante and surrounding almond, carob, and tourism operations contribute local sources, while the Atlantic coastal proximity and the Algarve's consistently sunny and breezy climate maintain generally good conditions throughout the year.

Today - 21 July | Pollution peaks at 19:00

AQI:

Medium

56.0/100

PM2.5 (fine particles):

Fair

21.9/100

PM10 (coarse particles):

Good

14.2/100

NO2 (nitrogen dioxide):

Good

6.2/100

O3 (ozone):

Medium

56.0/100

SO2 (sulfur dioxide):

Good

1.9/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

2.5/100

PM1 (ultrafine particles):

Good

13.3/100

Levels show the poorest local air quality during the day

Tomorrow - 22 July | Pollution peaks at 00:00

AQI:

Medium

40.5/100

PM2.5 (fine particles):

Good

16.1/100

PM10 (coarse particles):

Good

10.8/100

NO2 (nitrogen dioxide):

Good

1.9/100

O3 (ozone):

Medium

40.5/100

SO2 (sulfur dioxide):

Good

1.3/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

1.7/100

PM1 (ultrafine particles):

Good

8.8/100

Pollen forecast in Loulé

View pollen forecast

Frequently Asked Questions

Is air quality bad in Loulé right now?

On 21 July 2026, overall air quality in Loulé is fair. PM2.5 is the main pollutant at 21.9/100. Pollution peaks around 7:00 PM (O3: 56.0/100).

Will air quality be worse tomorrow in Loulé?

On 22 July 2026, air quality conditions in Loulé will be better than today, with AQI forecast at medium at 40.5/100. Pollution peaks around 12:00 AM (O3: 40.5/100).

When is air pollution at its worst in Loulé?

You're quickest to notice worse air in Loulé when local tree and grass pollen peaks, or due to vehicle traffic on the A22 Via do Infante and surrounding almond, carob, and tourism operations; the rest of the calendar year, the local setting keeps things noticeably clearer than average.

Are air quality levels in Loulé 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.

Want to see air quality forecasts for other cities in Portugal?

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Data provided by Airmine — Last update: 21 July 2026 at 16:20 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.

For long term forecasts and maps, see the Airmine app