City report · Grand Est, France
Nancy Air quality today
Air quality in Nancy currently reads AQI 6 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 6
Good
- PM2.5, fine particles (µg/m³)
- 0.5
- tree cover
- 21.2%
- trees in this area
- 65.8K
- more trees needed
- 27.3K
Measured across a 2 km radius around Nancy, France (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Nancy · AQI 6 (Good)
Nancy's tree count comes to 65,803 trees across 12.42 km² of land, 9 points below the 30% tree-cover level considered healthy for this area, so roughly 27,314 more trees would close the gap.
Air quality detail
Air quality in Nancy today: AQI 6, Good
Main pollutant: NO₂ · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Nancy-Charles III, 600 m away · median of 3 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
0.5
PM10
4.6
NO₂
11.6
O₃
—
SO₂
1.7
CO
—
Data: OpenAQ · EEA
- 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 Nancy's daily AQI at 73 on average, from 45 on Nov 11 to an hourly peak of 100 on Nov 7.
Where Nancy stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nancy: Below target
21.2% tree cover against a 30% healthy-neighborhood target, across 12.42 km² of land.
Trees in this area
65,803
Target trees
93,117
More trees needed
27,314
CO₂ if planted / yr
600.9 t
Deforestation · 2001–2025
How much forest has Nancy lost?
Since 2001, the area within 10 km of Nancy has lost about 167 hectares of forest (about 230 football pitches): 1.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 33 hectares (20%) 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
- 167 haabout 230 football pitches
- Share of its forest
- 1.7%of what there was in 2000
- Cleared for good
- 33 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 46 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 | 1 ha |
| 2003 | under 1 ha | 8 ha | 8 ha |
| 2004 | 1 ha | 7 ha | 8 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 2 ha | 8 ha | 10 ha |
| 2007 | 1 ha | 3 ha | 4 ha |
| 2008 | 5 ha | 41 ha | 46 ha |
| 2009 | under 1 ha | 4 ha | 4 ha |
| 2010 | 1 ha | 5 ha | 6 ha |
| 2011 | 2 ha | 1 ha | 4 ha |
| 2012 | under 1 ha | 1 ha | 2 ha |
| 2013 | under 1 ha | 3 ha | 3 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 9 ha | 1 ha | 10 ha |
| 2016 | 1 ha | 5 ha | 6 ha |
| 2017 | under 1 ha | 3 ha | 3 ha |
| 2018 | under 1 ha | under 1 ha | 2 ha |
| 2019 | 2 ha | 2 ha | 4 ha |
| 2020 | 1 ha | 10 ha | 12 ha |
| 2021 | under 1 ha | 12 ha | 12 ha |
| 2022 | 1 ha | under 1 ha | 1 ha |
| 2023 | under 1 ha | 14 ha | 14 ha |
| 2024 | 1 ha | under 1 ha | 2 ha |
| 2025 | under 1 ha | 1 ha | 1 ha |
What is causing deforestation around Nancy?
- Loggingcan grow back73% · 122 ha
- Towns and roadscleared for good12% · 21 ha
- Farms, pasture and plantationscleared for good7.1% · 12 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
- 10,900 ha
- Forest in 2020
- 12,400 ha
- Overall change
- +1,520 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nancy grew from about 10,900 hectares to 12,400 hectares, a net gain of about 1,520 hectares (+14%). New forest grew on about 1,660 hectares, while 141 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 Nancy
Same 2 km radius, same index — so they compare directly.
- Metz48.3 km
France
- Tree cover
- 30%
- Air quality
- 91
- Saarbrücken85.7 km
Germany
- Tree cover
- 50%
- Air quality
- 74
- Luxembourg103.0 km
Luxembourg
- Tree cover
- 36%
- Air quality
- 50
- Strasbourg115.2 km
France
- Tree cover
- 26%
- Air quality
- 148
- Trier123.6 km
Germany
- Tree cover
- 47%
- Air quality
- 53
- Mulhouse133.9 km
France
- Tree cover
- 28%
- Air quality
- 49
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Frequently asked
Questions about Nancy
What is the air quality (AQI) in Nancy right now?
The latest reading for Nancy shows an AQI of 6 (Good), measured Nov 11, 16:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Nancy-Charles III, 600 m away). The main pollutant is NO₂. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Nancy today?
At AQI 6 (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 Nancy been like this week?
Over the last 7 days, the CAMS air-quality model put Nancy's daily AQI at 73 on average, from 45 on Nov 11 to an hourly peak of 100 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Nancy lost since 2001?
Since 2001, the area within 10 km of Nancy has lost about 167 hectares of forest (about 230 football pitches): 1.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 33 hectares (20%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Nancy grew from about 10,900 hectares to 12,400 hectares, a net gain of about 1,520 hectares (+14%). New forest grew on about 1,660 hectares, while 141 hectares were lost.
What is the tree count in Nancy?
Nancy has an estimated 65,803 trees across the 12.42 km² of land measured — 21.2% tree cover, 9 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Nancy need?
Nancy needs roughly 27,314 more trees to close a 9-point shortfall against its 30% tree-cover target — about 600.9 t of extra CO₂ absorbed per year once grown.
How are Nancy's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Nancy, 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 Nancy; the tree count is an estimate derived from that cover.
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