City report · Portugal
Lisbon Air quality today
Air quality in Lisbon currently reads AQI 30 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 30
Good
- PM2.5, fine particles (µg/m³)
- 5.1
- tree cover
- 12.3%
- trees in this area
- 38.6K
- more trees needed
- 55.6K
Measured across a 2 km radius around Lisbon, Portugal (12.57 km²), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Lisbon · AQI 30 (Good)
Lisbon's tree count comes to 38,642 trees across 12.57 km², 18 points below the 30% tree-cover level considered healthy for this area, so roughly 55,606 more trees would close the gap.
Air quality detail
Air quality in Lisbon today: AQI 30, Good
Main pollutant: Ozone · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Morais Soares, Lisbon, 2 km away · median of 4 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.1
PM10
—
NO₂
—
O₃
63.9
SO₂
2.6
CO
216.0
Data: OpenAQ · AirGradient, EEA, steak113, eclips
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Lisbon's daily AQI at 50 on average, from 35 on Nov 9 to an hourly peak of 79 on Nov 6.
Where Lisbon stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Lisbon: Critically low
12.3% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
38,642
Target trees
94,248
More trees needed
55,606
CO₂ if planted / yr
1,223 t
Deforestation · 2001–2025
How much forest has Lisbon lost?
Since 2001, the area within 10 km of Lisbon has lost about 75 hectares of forest (about 100 football pitches): 7.2% of the forest it had in 2000. Most of it (65%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 75 haabout 100 football pitches
- Share of its forest
- 7.2%of what there was in 2000
- Cleared for good
- 49 hadeforestation: turned into farms, mines or towns
The worst year was 2018, when about 9 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | 1 ha | 3 ha | 4 ha |
| 2004 | 5 ha | 3 ha | 8 ha |
| 2005 | 3 ha | under 1 ha | 4 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 3 ha | under 1 ha | 3 ha |
| 2008 | 2 ha | under 1 ha | 2 ha |
| 2009 | 3 ha | under 1 ha | 3 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | 1 ha | 2 ha |
| 2014 | 2 ha | 5 ha | 7 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 3 ha | 2 ha | 5 ha |
| 2017 | 1 ha | under 1 ha | 2 ha |
| 2018 | 7 ha | 2 ha | 9 ha |
| 2019 | under 1 ha | 3 ha | 4 ha |
| 2020 | 8 ha | under 1 ha | 8 ha |
| 2021 | 2 ha | 3 ha | 5 ha |
| 2022 | 1 ha | under 1 ha | 1 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | under 1 ha | under 1 ha | 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Lisbon?
- Towns and roadscleared for good65% · 49 ha
- Loggingcan grow back25% · 18 ha
- Wildfirescan grow back6.3% · 5 ha
Also: unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 2,030 ha
- Forest in 2020
- 2,170 ha
- Overall change
- +132 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Lisbon grew from about 2,030 hectares to 2,170 hectares, a net gain of about 132 hectares (+6.5%). New forest grew on about 164 hectares, while 32 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
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. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Lisbon
Same 2 km radius, same index — so they compare directly.
- Leiria117.0 km
Portugal
- Tree cover
- 27%
- Air quality
- 28
- Badajoz189.6 km
Spain
- Tree cover
- 11%
- Air quality
- 13
- Viseu240.1 km
Portugal
- Tree cover
- 36%
- Air quality
- 27
- Huelva252.6 km
Spain
- Tree cover
- 8%
- Air quality
- 56
Also compared:Lisbon vs PortoLisbon vs Braga
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Frequently asked
Questions about Lisbon
What is the air quality (AQI) in Lisbon right now?
The latest reading for Lisbon shows an AQI of 30 (Good), measured Nov 11, 16:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Morais Soares, Lisbon, 2 km away). The main pollutant is Ozone. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Lisbon today?
At AQI 30 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Lisbon been like this week?
Over the last 7 days, the CAMS air-quality model put Lisbon's daily AQI at 50 on average, from 35 on Nov 9 to an hourly peak of 79 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Lisbon lost since 2001?
Since 2001, the area within 10 km of Lisbon has lost about 75 hectares of forest (about 100 football pitches): 7.2% of the forest it had in 2000. Most of it (65%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Lisbon grew from about 2,030 hectares to 2,170 hectares, a net gain of about 132 hectares (+6.5%). New forest grew on about 164 hectares, while 32 hectares were lost.
What is the tree count in Lisbon?
Lisbon has an estimated 38,642 trees across the 12.57 km² measured — 12.3% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Lisbon need?
Lisbon needs roughly 55,606 more trees to close a 18-point shortfall against its 30% tree-cover target — about 1,223 t of extra CO₂ absorbed per year once grown.
How are Lisbon's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Lisbon, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Lisbon; the tree count is an estimate derived from that cover.
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