City report · Auvergne-Rhône-Alpes, France
Lyon Air quality today
Air quality in Lyon currently reads AQI 29 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 29
Good
- PM2.5, fine particles (µg/m³)
- 5.2
- tree cover
- 12.4%
- trees in this area
- 36.9K
- more trees needed
- 52.3K
Measured across a 2 km radius around Stalingrad - Lamothe, 69007 Lyon, France (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Lyon · AQI 29 (Good)
Lyon's tree count comes to 36,852 trees across 11.89 km² of land, 18 points below the 30% tree-cover level considered healthy for this area, so roughly 52,306 more trees would close the gap.
Air quality detail
Air quality in Lyon today: AQI 29, Good
Main pollutant: PM2.5 · Observed Nov 11, 17:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Chemin du But, 6 km away · median of 9 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.2
PM10
7.5
NO₂
9.2
O₃
51.8
SO₂
1.3
CO
113.0
Data: OpenAQ · AirGradient, EEA, gioxi84, Longchêne
- 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 Lyon's daily AQI at 62 on average, from 31 on Nov 9 to an hourly peak of 98 on Nov 6.
Where Lyon stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Lyon: Critically low
12.4% tree cover against a 30% healthy-neighborhood target, across 11.89 km² of land.
Trees in this area
36,852
Target trees
89,158
More trees needed
52,306
CO₂ if planted / yr
1,151 t
Deforestation · 2001–2025
How much forest has Lyon lost?
Since 2001, the area within 10 km of Lyon has lost about 37 hectares of forest (about 52 football pitches): 1.1% of the forest it had in 2000. Most of it (60%) 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
- 37 haabout 52 football pitches
- Share of its forest
- 1.1%of what there was in 2000
- Cleared for good
- 22 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 5 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 | under 1 ha |
| 2004 | 2 ha | under 1 ha | 3 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 3 ha | 1 ha | 4 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 3 ha | 3 ha | 5 ha |
| 2009 | under 1 ha | under 1 ha | 1 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | 2 ha |
| 2013 | 1 ha | under 1 ha | 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 2 ha | under 1 ha | 3 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | 2 ha | under 1 ha | 3 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | 1 ha | 2 ha |
| 2022 | under 1 ha | under 1 ha | 1 ha |
| 2023 | 1 ha | 2 ha | 3 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | 1 ha | under 1 ha | 1 ha |
What is causing deforestation around Lyon?
- Towns and roadscleared for good58% · 22 ha
- Loggingcan grow back14% · 5 ha
- Farms, pasture and plantationscleared for good2.1% · under 1 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
- 7,030 ha
- Forest in 2020
- 7,550 ha
- Overall change
- +517 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Lyon grew from about 7,030 hectares to 7,550 hectares, a net gain of about 517 hectares (+7.4%). New forest grew on about 567 hectares, while 50 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 Lyon
Same 2 km radius, same index — so they compare directly.
- Saint-Étienne50.0 km
France
- Tree cover
- 31%
- Air quality
- 33
- Grenoble92.7 km
France
- Tree cover
- 21%
- Air quality
- 32
- Geneva112.2 km
Switzerland
- Tree cover
- 27%
- Air quality
- 19
- Clermont-Ferrand136.6 km
France
- Tree cover
- 18%
- Air quality
- 54
- Lausanne161.8 km
Switzerland
- Tree cover
- 40%
- Air quality
- 13
- Dijon174.4 km
France
- Tree cover
- 28%
- Air quality
- 28
Also compared:Lyon vs ParisLyon vs MarseilleLyon vs ToulouseLyon vs Nice
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Frequently asked
Questions about Lyon
What is the air quality (AQI) in Lyon right now?
The latest reading for Lyon shows an AQI of 29 (Good), measured Nov 11, 17:00 local time by 9 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Chemin du But, 6 km away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Lyon today?
At AQI 29 (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 Lyon been like this week?
Over the last 7 days, the CAMS air-quality model put Lyon's daily AQI at 62 on average, from 31 on Nov 9 to an hourly peak of 98 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 Lyon lost since 2001?
Since 2001, the area within 10 km of Lyon has lost about 37 hectares of forest (about 52 football pitches): 1.1% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Lyon grew from about 7,030 hectares to 7,550 hectares, a net gain of about 517 hectares (+7.4%). New forest grew on about 567 hectares, while 50 hectares were lost.
What is the tree count in Lyon?
Lyon has an estimated 36,852 trees across the 11.89 km² of land measured — 12.4% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Lyon need?
Lyon needs roughly 52,306 more trees to close a 18-point shortfall against its 30% tree-cover target — about 1,151 t of extra CO₂ absorbed per year once grown.
How are Lyon's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Stalingrad - Lamothe, 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 Stalingrad - Lamothe; the tree count is an estimate derived from that cover.
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