City report · Belgium
Liège Air quality today
Air quality in Liège currently reads AQI 16 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 16
Good
- PM2.5, fine particles (µg/m³)
- 2.2
- tree cover
- 37.6%
- trees in this area
- 111K
- more trees needed
- 0
Measured across a 2 km radius around Liège, Belgium (12.57 km²), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Liège · AQI 16 (Good)
Liège's tree count comes to 111,036 trees across 11.82 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Liège today: AQI 16, Good
Main pollutant: PM10 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · 48R237 - BIERSET, 7.2 km away · median of 6 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.2
PM10
17.0
NO₂
21.2
O₃
5.0
SO₂
—
CO
275.0
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 Liège's daily AQI at 67 on average, from 39 on Nov 11 to an hourly peak of 109 on Nov 6.
Where Liège stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Liège: Healthy tree cover
37.6% tree cover against a 30% healthy-neighborhood target, across 11.82 km² of land.
Trees in this area
111,036
Target trees
111,036
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Liège lost?
Since 2001, the area within 10 km of Liège has lost about 384 hectares of forest (about 540 football pitches): 4.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 109 hectares (28%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km southwest of the city center.
- Forest lost since 2001
- 384 haabout 540 football pitches
- Share of its forest
- 4.9%of what there was in 2000
- Cleared for good
- 109 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 47 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 | 2 ha | 2 ha |
| 2002 | 1 ha | 4 ha | 6 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 9 ha | 20 ha | 29 ha |
| 2005 | 3 ha | 6 ha | 9 ha |
| 2006 | 2 ha | 13 ha | 15 ha |
| 2007 | 6 ha | 15 ha | 20 ha |
| 2008 | 3 ha | 9 ha | 12 ha |
| 2009 | 4 ha | 15 ha | 18 ha |
| 2010 | 5 ha | 42 ha | 47 ha |
| 2011 | 3 ha | 10 ha | 13 ha |
| 2012 | 4 ha | 8 ha | 12 ha |
| 2013 | 2 ha | 3 ha | 5 ha |
| 2014 | 4 ha | 12 ha | 15 ha |
| 2015 | 2 ha | 3 ha | 4 ha |
| 2016 | 3 ha | 5 ha | 8 ha |
| 2017 | 3 ha | 11 ha | 13 ha |
| 2018 | 2 ha | 8 ha | 10 ha |
| 2019 | 8 ha | 22 ha | 30 ha |
| 2020 | 5 ha | 29 ha | 34 ha |
| 2021 | 11 ha | 20 ha | 31 ha |
| 2022 | 3 ha | 7 ha | 10 ha |
| 2023 | 8 ha | 7 ha | 14 ha |
| 2024 | 7 ha | 5 ha | 12 ha |
| 2025 | 12 ha | 3 ha | 14 ha |
What is causing deforestation around Liège?
- Loggingcan grow back68% · 262 ha
- Towns and roadscleared for good28% · 108 ha
- Unknown causescause unknown3.3% · 13 ha
Also: farms, pasture and plantations.
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
- 14,100 ha
- Forest in 2020
- 14,500 ha
- Overall change
- +367 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Liège grew from about 14,100 hectares to 14,500 hectares, a net gain of about 367 hectares (+2.6%). New forest grew on about 570 hectares, while 203 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 Liège
Same 2 km radius, same index — so they compare directly.
- Maastricht25.3 km
The Netherlands
- Tree cover
- 29%
- Air quality
- 28
- Aachen39.7 km
Germany
- Tree cover
- 42%
- Air quality
- 40
- Leuven66.8 km
Belgium
- Tree cover
- 31%
- Air quality
- 51
- Charleroi83.1 km
Belgium
- Tree cover
- 31%
- Air quality
- 54
- Mönchengladbach86.7 km
Germany
- Tree cover
- 34%
- Air quality
- 51
Build your own
Compare Liège with anywhere
This place
Liège
Use this data
Put Liège's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Liège
What is the air quality (AQI) in Liège right now?
The latest reading for Liège shows an AQI of 16 (Good), measured Nov 11, 16:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 48R237 - BIERSET, 7.2 km away). The main pollutant is PM10. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Liège today?
At AQI 16 (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 Liège been like this week?
Over the last 7 days, the CAMS air-quality model put Liège's daily AQI at 67 on average, from 39 on Nov 11 to an hourly peak of 109 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 Liège lost since 2001?
Since 2001, the area within 10 km of Liège has lost about 384 hectares of forest (about 540 football pitches): 4.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 109 hectares (28%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Liège grew from about 14,100 hectares to 14,500 hectares, a net gain of about 367 hectares (+2.6%). New forest grew on about 570 hectares, while 203 hectares were lost.
What is the tree count in Liège?
Liège has an estimated 111,036 trees across the 11.82 km² of land measured — 37.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Liège need?
Liège has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Liège's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Liège, 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 Liège; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address