Lisbon
2 km around Lisbon
Air quality now
AQI 40
12.3%
tree cover
55.6K more trees would reach 30% tree cover
Europe · air quality report · 9 cities
Portugal air quality today The AQI right now, city by city
Right now the 9 cities Airleaf measures in Portugal average AQI 33 (good). The worst air is in Porto, at AQI 63, and the cleanest in Coimbra, at AQI 11.
At ground stations alone, which measure rather than estimate, the average is AQI 32 across 6 cities. None of the 9 measured cities is over AQI 100 today, and 89% have Good air.
Average right now
AQI 33
Good
US EPA index, across 9 cities
- cities measured
- 9
- worst air: Porto
- 63
- cleanest air: Coimbra
- 11
- average tree cover
- 23.1%
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Portugal · average AQI 33
Air quality right now in the 8 largest cities in Portugal
Good
Porto
2 km around Porto
Air quality now
AQI 63
15.2%
tree cover
44.3K more trees would reach 30% tree cover
Braga
2 km around Praça da República
Air quality now
AQI 33
19.0%
tree cover
34.6K more trees would reach 30% tree cover
Coimbra
2 km around Bairro Sousa Pinto
Air quality now
AQI 11
26.4%
tree cover
10.8K more trees would reach 30% tree cover
Leiria
2 km around Leiria
Air quality now
AQI 37
27.3%
tree cover
8.5K more trees would reach 30% tree cover
Setúbal
2 km around Setúbal
Air quality now
AQI 31
14.1%
tree cover
36.0K more trees would reach 30% tree cover
Funchal
2 km around São Roque
Air quality now
AQI 37
36.3%
tree cover
Healthy tree cover
Viseu
2 km around Viseu
Air quality now
AQI 21
36.2%
tree cover
Healthy tree cover
Across the country
How clean is the air across Portugal today?
None of the 9 measured cities is over AQI 100 today, and 89% have Good air. Air quality is satisfactory for everyone.
9 measured cities
- Good8 (89%)
- Moderate1 (11%)
Every measured city, including model estimates where no ground station is near.
In aggregate
Portugal in numbers
Every figure below is read the same way over the same 2 km area per city, so they add up and compare like for like. Averaged across the 9 of 9 cities measured so far in Portugal.
- Average air quality
- AQI 33Mean of the latest reading per city
- Average tree cover
- 23.1%7 of 9 below their target
- Trees counted
- 635KAcross every measured area
- More trees needed
- 217KTo bring each area to its target
Worst air quality right now
Cleanest air right now
Greenest cities in Portugal
Least tree cover in Portugal
Excludes barren and desert sites
Against everywhere else
How does Portugal compare with other countries?
Right now the cities of Portugal average cleaner air than 88% of the 171 countries Airleaf has enough cities to average, and more tree cover than 48%.
Cleaner air than…
- Portugal
- Beats 88%
More tree cover than…
- Portugal
- Beats 48%
See the most polluted and cleanest air rankings for every country.
Deforestation · 2001–2025
How much forest has Portugal lost?
Since 2001, Portugal has lost about 1.3 million hectares of forest (about 13,000 km²): 57% of the forest it had in 2000. The biggest cause was wildfires (49%), after which forest can grow back. About 36,800 hectares (2.8%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 1.3 million haabout 13,000 km²
- Share of its forest
- 57%of what there was in 2000
- Cleared for good
- 36,800 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 1,370 ha | 22,800 ha | 24,200 ha |
| 2002 | 1,870 ha | 32,700 ha | 34,500 ha |
| 2003 | 1,180 ha | 25,400 ha | 26,600 ha |
| 2004 | 2,670 ha | 51,700 ha | 54,400 ha |
| 2005 | 1,500 ha | 37,300 ha | 38,800 ha |
| 2006 | 1,520 ha | 40,800 ha | 42,400 ha |
| 2007 | 1,770 ha | 34,300 ha | 36,100 ha |
| 2008 | 1,840 ha | 31,600 ha | 33,400 ha |
| 2009 | 2,020 ha | 37,700 ha | 39,700 ha |
| 2010 | 2,080 ha | 46,100 ha | 48,200 ha |
| 2011 | 1,100 ha | 25,400 ha | 26,500 ha |
| 2012 | 1,470 ha | 56,500 ha | 58,000 ha |
| 2013 | 919 ha | 50,700 ha | 51,600 ha |
| 2014 | 1,200 ha | 58,800 ha | 60,000 ha |
| 2015 | 1,120 ha | 44,700 ha | 45,800 ha |
| 2016 | 1,740 ha | 92,600 ha | 94,300 ha |
| 2017 | 1,360 ha | 172,000 ha | 174,000 ha |
| 2018 | 1,770 ha | 95,500 ha | 97,300 ha |
| 2019 | 1,020 ha | 35,800 ha | 36,800 ha |
| 2020 | 1,500 ha | 60,300 ha | 61,800 ha |
| 2021 | 1,010 ha | 36,100 ha | 37,100 ha |
| 2022 | 971 ha | 45,900 ha | 46,800 ha |
| 2023 | 808 ha | 35,500 ha | 36,300 ha |
| 2024 | 900 ha | 42,200 ha | 43,100 ha |
| 2025 | 2,050 ha | 54,700 ha | 56,700 ha |
Forest loss is slowing down: about 44,000 hectares a year in 2021–2025, down from 92,800 hectares a year in 2016–2020. The worst year was 2017, when about 174,000 hectares of forest were lost, mostly to wildfires.
What is causing deforestation in Portugal?
- Wildfirescan grow back49% · 640,000 ha
- Loggingcan grow back48% · 626,000 ha
- Farms, pasture and plantationscleared for good1.6% · 20,300 ha
Also: towns and roads, mining and energy, storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. How it's measured
Portugal as a whole
36.6% of Portugal was forested as of 2024, against a 30% benchmark. That already clears the benchmark — the city reports above show where cover is still thin locally. Source: World Bank (FAO).
Full directory
Every city we track in Portugal
9 cities, A–Z
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Clean-air buying guides
Cleaner air at home in Portugal
Picked by tested clean-air delivery rate (CADR), noise and running cost, from independent test labels. No brand pays to be listed.
- The best air purifiers for wildfire smoke and smog
Air purifiers that keep up with wildfire smoke and winter smog, ranked by verified smoke CADR, with the room each one clears on a smoky day.
- The best air purifiers under $200
Good HEPA air purifiers under $200 at the makers' own prices, compared on verified clean air, room size and what the filters cost each year.
- NIOSH-approved N95 masks for smoke and smog
NIOSH-approved N95 masks and P100 respirators for smog and smoke, and how to get the fit right. Cloth and surgical masks do little against PM2.5.
Frequently asked
Air quality in Portugal: your questions answered
What is the air quality in Portugal today?
Right now the 9 cities Airleaf measures in Portugal average AQI 33 (good). The worst air is in Porto, at AQI 63, and the cleanest in Coimbra, at AQI 11. At ground stations alone, which measure rather than estimate, the average is AQI 32 across 6 cities. None of the 9 measured cities is over AQI 100 today, and 89% have Good air.
Which city in Portugal has the worst air right now?
Porto, at AQI 63 (Moderate) on the US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
Which city in Portugal has the cleanest air right now?
Coimbra, at AQI 11 (Good). Both lists rank current readings, from ground stations wherever Portugal has at least three cities with one.
Is the air in Portugal safe to breathe today?
It depends on the city. 8 cities are Good, 1 city is Moderate. At the national average of AQI 33: Air quality is satisfactory for everyone.
How much forest has Portugal lost since 2001?
About 1.3 million ha from 2001 to 2025, 57% of the forest it had in 2000, from the University of Maryland's yearly satellite maps of forest loss. 36,800 ha of it was cleared for good, for farms, mines or towns.
Which city in Portugal has the most trees?
Funchal, with 36.3% tree cover within 2 km of its center, measured from Sentinel-2 satellite images.
How does Airleaf measure air quality in Portugal?
Each city's reading is the US EPA air quality index, from ground monitoring stations where one has reported recently nearby, and from the CAMS atmospheric model elsewhere; each city's report says which. Tree cover is measured over the same 2 km radius in every city, so the cities compare like for like.
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