City report · Madrid, Spain
Leganés Air quality today
Air quality in Leganés currently reads AQI 23 (Good): Air quality is satisfactory for everyone.
AQI 23
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 1.0
- tree cover
- 10.5%
- trees in this area
- 33.0K
- more trees needed
- 61.3K
Measured across a 2 km radius around Leganés, Madrid, Spain (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Leganés · AQI 23 (Good)
Leganés's tree count comes to 32,987 trees across 12.57 km², 20 points below the 30% tree-cover level considered healthy for this area, so roughly 61,261 more trees would close the gap.
Air quality detail
Air quality in Leganés today: AQI 23, Good
Main pollutant: Ozone · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · ALCORCÓN, 6.2 km away · median of 8 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.0
PM10
3.0
NO₂
10.5
O₃
51.0
SO₂
—
CO
350.0
Data: OpenAQ · EEA
- 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 Leganés's daily AQI at 58 on average, from 22 on Nov 10 to an hourly peak of 103 on Nov 8.
Where Leganés stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Leganés: Critically low
10.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
32,987
Target trees
94,248
More trees needed
61,261
CO₂ if planted / yr
1,348 t
Deforestation · 2001–2025
How much forest has Leganés lost?
Since 2001, the area within 10 km of Leganés has lost about 147 hectares of forest (about 210 football pitches): 38% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 18 hectares (12%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from September 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 147 haabout 210 football pitches
- Share of its forest
- 38%of what there was in 2000
- Cleared for good
- 18 hadeforestation: turned into farms, mines or towns
The worst year was 2021, when about 129 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 | under 1 ha | under 1 ha | 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 2 ha | under 1 ha | 3 ha |
| 2006 | 1 ha | 3 ha | 4 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 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 | 4 ha | 4 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 12 ha | 118 ha | 129 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Leganés?
- Loggingcan grow back85% · 125 ha
- Towns and roadscleared for good12% · 18 ha
- Unknown causescause unknown2% · 3 ha
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
- 704 ha
- Forest in 2020
- 799 ha
- Overall change
- +95 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Leganés grew from about 704 hectares to 799 hectares, a net gain of about 95 hectares (+13%). New forest grew on about 105 hectares, while 10 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 Leganés
Same 2 km radius, same index — so they compare directly.
- Alcobendas26.6 km
Spain
- Tree cover
- 12%
- Air quality
- 33
- Torrejón de Ardoz28.7 km
Spain
- Tree cover
- 10%
- Air quality
- 11
- Alcalá de Henares38.3 km
Spain
- Tree cover
- 20%
- Air quality
- 7
- Valladolid168.2 km
Spain
- Tree cover
- 17%
- Air quality
- 16
- Salamanca175.5 km
Spain
- Tree cover
- 13%
- Air quality
- 5
- Albacete220.5 km
Spain
- Tree cover
- 8%
- Air quality
- 20
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Frequently asked
Questions about Leganés
What is the air quality (AQI) in Leganés right now?
The latest reading for Leganés shows an AQI of 23 (Good), measured Nov 11, 16:00 local time by 8 ground monitoring stations via OpenAQ (the median of their readings; the nearest is ALCORCÓN, 6.2 km away). The main pollutant is Ozone. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Leganés today?
At AQI 23 (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 Leganés been like this week?
Over the last 7 days, the CAMS air-quality model put Leganés's daily AQI at 58 on average, from 22 on Nov 10 to an hourly peak of 103 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Leganés lost since 2001?
Since 2001, the area within 10 km of Leganés has lost about 147 hectares of forest (about 210 football pitches): 38% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 18 hectares (12%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Leganés grew from about 704 hectares to 799 hectares, a net gain of about 95 hectares (+13%). New forest grew on about 105 hectares, while 10 hectares were lost.
What is the tree count in Leganés?
Leganés has an estimated 32,987 trees across the 12.57 km² measured — 10.5% tree cover, 20 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Leganés need?
Leganés needs roughly 61,261 more trees to close a 20-point shortfall against its 30% tree-cover target — about 1,348 t of extra CO₂ absorbed per year once grown.
How are Leganés's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Leganés, 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 Leganés; the tree count is an estimate derived from that cover.
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