City report · Los Lagos Region, Chile
Osorno Air quality today
Air quality in Osorno currently reads AQI 44 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 44
Good
- PM2.5, fine particles (µg/m³)
- 8.6
- tree cover
- 26.9%
- trees in this area
- 83.2K
- more trees needed
- 9.6K
Measured across a 2 km radius around Osorno, Los Lagos, Chile (12.57 km²), from a satellite image of Feb 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Osorno · AQI 44 (Good)
Osorno's tree count comes to 83,241 trees across 12.38 km² of land, 3 points below the 30% tree-cover level considered healthy for this area, so roughly 9,593 more trees would close the gap.
Air quality detail
Air quality in Osorno today: AQI 44, Good
Main pollutant: PM2.5 · Observed Nov 10, 23:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.6
PM10
12.5
NO₂
9.7
O₃
22.0
SO₂
0.7
CO
112.0
- 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 Osorno's daily AQI at 20 on average, from 8 on Nov 6 to an hourly peak of 53 on Nov 4.
Where Osorno stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Osorno: Below target
26.9% tree cover against a 30% healthy-neighborhood target, across 12.38 km² of land.
Trees in this area
83,241
Target trees
92,834
More trees needed
9,593
CO₂ if planted / yr
211.0 t
Deforestation · 2001–2025
How much forest has Osorno lost?
Since 2001, the area within 10 km of Osorno has lost about 530 hectares of forest (about 740 football pitches): 6.2% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2018: satellite photo from March 2018 of a 5 × 5 km area about 7 km southwest of the city center.
- Forest lost since 2001
- 530 haabout 740 football pitches
- Share of its forest
- 6.2%of what there was in 2000
- Cleared for good
- 318 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 82 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 | 6 ha | 2 ha | 8 ha |
| 2002 | 10 ha | 2 ha | 12 ha |
| 2003 | 6 ha | 8 ha | 14 ha |
| 2004 | 4 ha | 5 ha | 9 ha |
| 2005 | 11 ha | 9 ha | 20 ha |
| 2006 | 2 ha | 3 ha | 5 ha |
| 2007 | 11 ha | 4 ha | 15 ha |
| 2008 | 19 ha | 24 ha | 42 ha |
| 2009 | 10 ha | 3 ha | 13 ha |
| 2010 | 8 ha | under 1 ha | 8 ha |
| 2011 | 13 ha | 4 ha | 17 ha |
| 2012 | 10 ha | 2 ha | 13 ha |
| 2013 | 30 ha | 10 ha | 40 ha |
| 2014 | 65 ha | 17 ha | 82 ha |
| 2015 | 8 ha | 11 ha | 20 ha |
| 2016 | 9 ha | 8 ha | 16 ha |
| 2017 | 10 ha | 6 ha | 16 ha |
| 2018 | 15 ha | 27 ha | 42 ha |
| 2019 | 12 ha | 18 ha | 29 ha |
| 2020 | 4 ha | 7 ha | 11 ha |
| 2021 | 10 ha | 10 ha | 19 ha |
| 2022 | 9 ha | 4 ha | 13 ha |
| 2023 | 9 ha | 3 ha | 12 ha |
| 2024 | 21 ha | 17 ha | 38 ha |
| 2025 | 7 ha | 10 ha | 17 ha |
What is causing deforestation around Osorno?
- Farms, pasture and plantationscleared for good57% · 300 ha
- Loggingcan grow back37% · 198 ha
- Towns and roadscleared for good3.3% · 18 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
- 3,200 ha
- Forest in 2020
- 3,330 ha
- Overall change
- +134 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Osorno grew from about 3,200 hectares to 3,330 hectares, a net gain of about 134 hectares (+4.2%). New forest grew on about 411 hectares, while 277 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 Osorno
Same 2 km radius, same index — so they compare directly.
- Valdivia85.0 km
Chile
- Tree cover
- 26%
- Air quality
- 42
- Puerto Montt100.8 km
Chile
- Tree cover
- 16%
- Air quality
- 29
- Temuco209.4 km
Chile
- Tree cover
- 26%
- Air quality
- 48
- Los Ángeles351.7 km
Chile
- Tree cover
- 15%
- Air quality
- 58
- Villa Mercedes366.3 km
Chile
- Tree cover
- 33%
- Air quality
- 29
- Coronel393.6 km
Chile
- Tree cover
- 36%
- Air quality
- 44
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Frequently asked
Questions about Osorno
What is the air quality (AQI) in Osorno right now?
The latest reading for Osorno shows an AQI of 44 (Good), observed Nov 10, 23:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Osorno today?
At AQI 44 (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 Osorno been like this week?
Over the last 7 days, the CAMS air-quality model put Osorno's daily AQI at 20 on average, from 8 on Nov 6 to an hourly peak of 53 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Osorno lost since 2001?
Since 2001, the area within 10 km of Osorno has lost about 530 hectares of forest (about 740 football pitches): 6.2% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Osorno grew from about 3,200 hectares to 3,330 hectares, a net gain of about 134 hectares (+4.2%). New forest grew on about 411 hectares, while 277 hectares were lost.
What is the tree count in Osorno?
Osorno has an estimated 83,241 trees across the 12.38 km² of land measured — 26.9% tree cover, 3 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Osorno need?
Osorno needs roughly 9,593 more trees to close a 3-point shortfall against its 30% tree-cover target — about 211.0 t of extra CO₂ absorbed per year once grown.
How are Osorno'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 Osorno; the tree count is an estimate derived from that cover.
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