City report · Liberia
Gbarnga Air quality today
Air quality in Gbarnga currently reads AQI 31 (Good): Air quality is satisfactory for everyone.
AQI 31
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.1
- tree cover
- 48.1%
- trees in this area
- 151K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Gbarnga, Liberia (4.9 sq mi), from a satellite image of Mar 10, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Gbarnga · AQI 31 (Good)
Gbarnga's tree count comes to 151,111 trees across 4.9 sq mi (12.57 km²), already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Gbarnga today: AQI 31, Good
Main pollutant: PM2.5 · Observed Nov 10, 15:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.1
PM10
9.7
NO₂
0.7
O₃
70.0
SO₂
0.4
CO
176.0
- 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 Gbarnga's daily AQI at 40 on average, from 35 on Nov 4 to an hourly peak of 65 on Nov 4.
Where Gbarnga stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gbarnga: Healthy tree cover
48.1% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
151,111
Target trees
151,111
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Gbarnga lost?
Since 2001, the area within 10 km of Gbarnga has lost about 15,800 hectares of forest (about 22,000 football pitches): 59% of the forest it had in 2000. Most of it (59%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 15,800 haabout 22,000 football pitches
- Share of its forest
- 59%of what there was in 2000
- Cleared for good
- 9,250 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 648 hectares a year in 2021–2025, down from 1,170 hectares a year in 2016–2020. The worst year was 2013, when about 1,810 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 | 29 ha | 12 ha | 41 ha |
| 2002 | 571 ha | 233 ha | 804 ha |
| 2003 | 97 ha | 22 ha | 119 ha |
| 2004 | 8 ha | 9 ha | 17 ha |
| 2005 | 76 ha | 38 ha | 114 ha |
| 2006 | 73 ha | 69 ha | 142 ha |
| 2007 | 231 ha | 82 ha | 313 ha |
| 2008 | 128 ha | 96 ha | 224 ha |
| 2009 | 115 ha | 96 ha | 211 ha |
| 2010 | 15 ha | 14 ha | 29 ha |
| 2011 | 117 ha | 67 ha | 184 ha |
| 2012 | 113 ha | 94 ha | 207 ha |
| 2013 | 1,100 ha | 713 ha | 1,810 ha |
| 2014 | 700 ha | 442 ha | 1,140 ha |
| 2015 | 706 ha | 649 ha | 1,360 ha |
| 2016 | 609 ha | 414 ha | 1,020 ha |
| 2017 | 774 ha | 636 ha | 1,410 ha |
| 2018 | 400 ha | 268 ha | 668 ha |
| 2019 | 644 ha | 488 ha | 1,130 ha |
| 2020 | 909 ha | 698 ha | 1,610 ha |
| 2021 | 389 ha | 262 ha | 651 ha |
| 2022 | 336 ha | 301 ha | 637 ha |
| 2023 | 256 ha | 219 ha | 475 ha |
| 2024 | 495 ha | 354 ha | 849 ha |
| 2025 | 364 ha | 262 ha | 626 ha |
What is causing deforestation around Gbarnga?
- Farms, pasture and plantationscleared for good54% · 8,540 ha
- Shifting farmingcan grow back41% · 6,540 ha
- Towns and roadscleared for good4.5% · 715 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
- 27,600 ha
- Forest in 2020
- 24,600 ha
- Overall change
- −3,020 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gbarnga shrank from about 27,600 hectares to 24,600 hectares, a net loss of about 3,020 hectares (−11%). New forest grew on about 937 hectares, but 3,960 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 Gbarnga
What is the air quality (AQI) in Gbarnga right now?
The latest reading for Gbarnga shows an AQI of 31 (Good), observed Nov 10, 15:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Gbarnga today?
At AQI 31 (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 Gbarnga been like this week?
Over the last 7 days, the CAMS air-quality model put Gbarnga's daily AQI at 40 on average, from 35 on Nov 4 to an hourly peak of 65 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Gbarnga lost since 2001?
Since 2001, the area within 10 km of Gbarnga has lost about 15,800 hectares of forest (about 22,000 football pitches): 59% of the forest it had in 2000. Most of it (59%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 648 hectares a year in 2021–2025, down from 1,170 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Gbarnga shrank from about 27,600 hectares to 24,600 hectares, a net loss of about 3,020 hectares (−11%). New forest grew on about 937 hectares, but 3,960 hectares were lost.
What is the tree count in Gbarnga?
Gbarnga has an estimated 151,111 trees across the 4.9 sq mi (12.57 km²) measured — 48.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Gbarnga need?
Gbarnga has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Gbarnga'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 1.2 mi (2 km) radius around Gbarnga; the tree count is an estimate derived from that cover.
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