City report · Switzerland
Lausanne Air quality today
Air quality in Lausanne currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 53
Moderate
- PM2.5, fine particles (µg/m³)
- 9.9
- tree cover
- 40.4%
- trees in this area
- 105K
- more trees needed
- 0
Measured across a 2 km radius around Lausanne, Switzerland (12.57 km²), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Lausanne · AQI 53 (Moderate)
Lausanne's tree count comes to 104,836 trees across 10.38 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Lausanne today: AQI 53, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 85 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 85 km, e.g. Genève and Bern
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.9
PM10
8.7
NO₂
9.0
O₃
47.0
SO₂
0.4
CO
149.0
- 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 Lausanne's daily AQI at 48 on average, from 27 on Nov 10 to an hourly peak of 69 on Nov 8.
Where Lausanne stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Lausanne: Healthy tree cover
40.4% tree cover against a 30% healthy-neighborhood target, across 10.38 km² of land.
Trees in this area
104,836
Target trees
104,836
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Lausanne lost?
Since 2001, the area within 10 km of Lausanne has lost about 280 hectares of forest (about 390 football pitches): 5.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 23 hectares (8.2%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 280 haabout 390 football pitches
- Share of its forest
- 5.7%of what there was in 2000
- Cleared for good
- 23 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 23 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 | 4 ha | 5 ha |
| 2002 | 2 ha | 14 ha | 16 ha |
| 2003 | under 1 ha | 3 ha | 4 ha |
| 2004 | 5 ha | 18 ha | 22 ha |
| 2005 | 2 ha | 20 ha | 22 ha |
| 2006 | 1 ha | 12 ha | 13 ha |
| 2007 | under 1 ha | 13 ha | 14 ha |
| 2008 | 1 ha | 22 ha | 23 ha |
| 2009 | under 1 ha | 12 ha | 13 ha |
| 2010 | under 1 ha | 9 ha | 9 ha |
| 2011 | under 1 ha | 13 ha | 13 ha |
| 2012 | 1 ha | 9 ha | 10 ha |
| 2013 | under 1 ha | 5 ha | 5 ha |
| 2014 | under 1 ha | 5 ha | 6 ha |
| 2015 | under 1 ha | 2 ha | 2 ha |
| 2016 | under 1 ha | 4 ha | 4 ha |
| 2017 | under 1 ha | 9 ha | 10 ha |
| 2018 | under 1 ha | 9 ha | 9 ha |
| 2019 | under 1 ha | 11 ha | 11 ha |
| 2020 | under 1 ha | 5 ha | 6 ha |
| 2021 | under 1 ha | 11 ha | 12 ha |
| 2022 | under 1 ha | 3 ha | 4 ha |
| 2023 | under 1 ha | 17 ha | 18 ha |
| 2024 | 2 ha | 15 ha | 17 ha |
| 2025 | 1 ha | 13 ha | 15 ha |
What is causing deforestation around Lausanne?
- Loggingcan grow back88% · 247 ha
- Towns and roadscleared for good8.2% · 23 ha
- Unknown causescause unknown3.7% · 11 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
- 6,890 ha
- Forest in 2020
- 6,990 ha
- Overall change
- +98 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Lausanne stayed about the same size, at about 6,990 hectares: new forest grew on about 166 hectares, and about 68 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
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Frequently asked
Questions about Lausanne
What is the air quality (AQI) in Lausanne right now?
The latest reading for Lausanne shows an AQI of 53 (Moderate), observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 85 km, 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 Lausanne today?
At AQI 53 (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 Lausanne been like this week?
Over the last 7 days, the CAMS air-quality model put Lausanne's daily AQI at 48 on average, from 27 on Nov 10 to an hourly peak of 69 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 Lausanne lost since 2001?
Since 2001, the area within 10 km of Lausanne has lost about 280 hectares of forest (about 390 football pitches): 5.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 23 hectares (8.2%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Lausanne stayed about the same size, at about 6,990 hectares: new forest grew on about 166 hectares, and about 68 hectares were lost.
What is the tree count in Lausanne?
Lausanne has an estimated 104,836 trees across the 10.38 km² of land measured — 40.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Lausanne need?
Lausanne has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Lausanne'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 Lausanne; the tree count is an estimate derived from that cover.
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