City report · Pays de la Loire, France
Nantes Air quality today
Air quality in Nantes currently reads AQI 40 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 40
Good
- PM2.5, fine particles (µg/m³)
- 7.2
- tree cover
- 21.8%
- trees in this area
- 64.2K
- more trees needed
- 24.2K
Measured across a 2 km radius around Bouffay, 44000 Nantes, France (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Nantes · AQI 40 (Good)
Nantes's tree count comes to 64,241 trees across 11.79 km² of land, 8 points below the 30% tree-cover level considered healthy for this area, so roughly 24,164 more trees would close the gap.
Air quality detail
Air quality in Nantes today: AQI 40, Good
Main pollutant: PM2.5 · Observed Nov 11, 14:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Trentemoult, Rezé, Loire, France, 3.3 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.2
PM10
10.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Air Pays de la Loire
- 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 Nantes's daily AQI at 57 on average, from 36 on Nov 10 to an hourly peak of 87 on Nov 6.
Where Nantes stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nantes: Below target
21.8% tree cover against a 30% healthy-neighborhood target, across 11.79 km² of land.
Trees in this area
64,241
Target trees
88,405
More trees needed
24,164
CO₂ if planted / yr
531.6 t
Deforestation · 2001–2025
How much forest has Nantes lost?
Since 2001, the area within 10 km of Nantes has lost about 71 hectares of forest (about 99 football pitches): 1.3% of the forest it had in 2000. Most of it (64%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 71 haabout 99 football pitches
- Share of its forest
- 1.3%of what there was in 2000
- Cleared for good
- 45 hadeforestation: turned into farms, mines or towns
The worst year was 2021, when about 16 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 | under 1 ha | 1 ha | 2 ha |
| 2005 | 1 ha | under 1 ha | 2 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | 1 ha |
| 2008 | 4 ha | 4 ha | 8 ha |
| 2009 | 12 ha | 2 ha | 14 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 2 ha | 2 ha | 4 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 | 2 ha | under 1 ha | 2 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | 7 ha | under 1 ha | 8 ha |
| 2019 | 3 ha | 1 ha | 4 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 8 ha | 7 ha | 16 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | under 1 ha | 3 ha | 3 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Nantes?
- Towns and roadscleared for good48% · 34 ha
- Farms, pasture and plantationscleared for good16% · 11 ha
- Loggingcan grow back12% · 9 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
- 6,900 ha
- Forest in 2020
- 7,910 ha
- Overall change
- +1,010 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nantes grew from about 6,900 hectares to 7,910 hectares, a net gain of about 1,010 hectares (+15%). New forest grew on about 1,130 hectares, while 129 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 Nantes
Same 2 km radius, same index — so they compare directly.
- Angers80.6 km
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- Tree cover
- 23%
- Air quality
- 53
- Le Mans157.9 km
France
- Tree cover
- 28%
- Air quality
- 52
- Tours171.3 km
France
- Tree cover
- 29%
- Air quality
- 46
- Saint Helier222.9 km
Jersey
- Tree cover
- 26%
- Air quality
- 36
- Caen236.1 km
France
- Tree cover
- 24%
- Air quality
- 34
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Frequently asked
Questions about Nantes
What is the air quality (AQI) in Nantes right now?
The latest reading for Nantes shows an AQI of 40 (Good), measured Nov 11, 14:00 local time by the Trentemoult, Rezé, Loire, France ground monitoring station, 3.3 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Nantes today?
At AQI 40 (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 Nantes been like this week?
Over the last 7 days, the CAMS air-quality model put Nantes's daily AQI at 57 on average, from 36 on Nov 10 to an hourly peak of 87 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 Nantes lost since 2001?
Since 2001, the area within 10 km of Nantes has lost about 71 hectares of forest (about 99 football pitches): 1.3% of the forest it had in 2000. Most of it (64%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Nantes grew from about 6,900 hectares to 7,910 hectares, a net gain of about 1,010 hectares (+15%). New forest grew on about 1,130 hectares, while 129 hectares were lost.
What is the tree count in Nantes?
Nantes has an estimated 64,241 trees across the 11.79 km² of land measured — 21.8% tree cover, 8 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Nantes need?
Nantes needs roughly 24,164 more trees to close a 8-point shortfall against its 30% tree-cover target — about 531.6 t of extra CO₂ absorbed per year once grown.
How are Nantes's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Bouffay, 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 Bouffay; the tree count is an estimate derived from that cover.
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