City report · Santiago Metropolitan, Chile
Peñalolén Air quality today
Air quality in Peñalolén currently reads AQI 58 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 58
Moderate
- PM2.5, fine particles (µg/m³)
- 13.2
- tree cover
- 17.5%
- trees in this area
- 55.0K
- more trees needed
- 39.3K
Measured across a 2 km radius around Peñalolén, Santiago Metropolitan Region, Chile (12.57 km²), from a satellite image of Mar 13, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Peñalolén · AQI 58 (Moderate)
Peñalolén's tree count comes to 54,978 trees across 12.57 km², 13 points below the 30% tree-cover level considered healthy for this area, so roughly 39,270 more trees would close the gap.
Air quality detail
Air quality in Peñalolén today: AQI 58, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 22:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.2
PM10
13.2
NO₂
14.3
O₃
128.0
SO₂
16.1
CO
907.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Peñalolén's daily AQI at 54 on average, from 38 on Nov 4 to an hourly peak of 97 on Nov 10.
Where Peñalolén stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Peñalolén: Critically low
17.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
54,978
Target trees
94,248
More trees needed
39,270
CO₂ if planted / yr
863.9 t
Deforestation · 2001–2025
How much forest has Peñalolén lost?
Since 2001, the area within 10 km of Peñalolén has lost about 1 hectare of forest: under 1% of the forest it had in 2000. The biggest cause was towns and roads (31%). Almost none of it was deforestation, meaning forest cleared for good.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 1 ha
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- under 1 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 | 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 | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 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 | under 1 ha | under 1 ha | under 1 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 Peñalolén?
- Towns and roadscleared for good31% · under 1 ha
- Unknown causescause unknown77% · 1 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
- 2,820 ha
- Forest in 2020
- 3,040 ha
- Overall change
- +215 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Peñalolén grew from about 2,820 hectares to 3,040 hectares, a net gain of about 215 hectares (+7.6%). New forest grew on about 237 hectares, while 22 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 Peñalolén
Same 2 km radius, same index — so they compare directly.
- Puente Alto16.4 km
Chile
- Tree cover
- 8%
- Air quality
- 58
- Quilicura20.1 km
Chile
- Tree cover
- 6%
- Air quality
- 62
- San Bernardo20.6 km
Chile
- Tree cover
- 7%
- Air quality
- 70
- Maipú22.0 km
Chile
- Tree cover
- 8%
- Air quality
- 70
- Colina32.1 km
Chile
- Tree cover
- 7%
- Air quality
- 65
- Lampa37.6 km
Chile
- Tree cover
- 11%
- Air quality
- 65
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Frequently asked
Questions about Peñalolén
What is the air quality (AQI) in Peñalolén right now?
The latest reading for Peñalolén shows an AQI of 58 (Moderate), observed Nov 10, 22:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Peñalolén today?
At AQI 58 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Peñalolén been like this week?
Over the last 7 days, the CAMS air-quality model put Peñalolén's daily AQI at 54 on average, from 38 on Nov 4 to an hourly peak of 97 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Peñalolén lost since 2001?
Since 2001, the area within 10 km of Peñalolén has lost about 1 hectare of forest: under 1% of the forest it had in 2000. The biggest cause was towns and roads (31%). Almost none of it was deforestation, meaning forest cleared for good. Comparing satellite maps from 2000 and 2020, the forest around Peñalolén grew from about 2,820 hectares to 3,040 hectares, a net gain of about 215 hectares (+7.6%). New forest grew on about 237 hectares, while 22 hectares were lost.
What is the tree count in Peñalolén?
Peñalolén has an estimated 54,978 trees across the 12.57 km² measured — 17.5% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Peñalolén need?
Peñalolén needs roughly 39,270 more trees to close a 13-point shortfall against its 30% tree-cover target — about 863.9 t of extra CO₂ absorbed per year once grown.
How are Peñalolén's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Peñalolén; the tree count is an estimate derived from that cover.
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