City report · Liberia
Buchanan Air quality today
Air quality in Buchanan currently reads AQI 28 (Good): Air quality is satisfactory for everyone.
AQI 28
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.3
- tree cover
- 19.9%
- trees in this area
- 42.5K
- more trees needed
- 21.5K
Measured across a 1.2 mi (2 km) radius around Buchanan, Liberia (4.9 sq mi), from a satellite image of Sep 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Buchanan · AQI 28 (Good)
Buchanan's tree count comes to 42,450 trees across 3.3 sq mi (8.54 km²) of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 21,545 more trees would close the gap.
Air quality detail
Air quality in Buchanan today: AQI 28, Good
Main pollutant: PM2.5 · Observed Nov 11, 06:00 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
3.3
PM10
4.8
NO₂
4.0
O₃
36.0
SO₂
0.4
CO
201.0
- 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 Buchanan's daily AQI at 38 on average, from 21 on Nov 5 to an hourly peak of 60 on Nov 9.
Where Buchanan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Buchanan: Below target
19.9% tree cover against a 30% healthy-neighborhood target, across 3.3 sq mi (8.54 km²) of land.
Trees in this area
42,450
Target trees
63,995
More trees needed
21,545
CO₂ if planted / yr
474.0 t
Deforestation · 2001–2025
How much forest has Buchanan lost?
Since 2001, the area within 10 km of Buchanan has lost about 3,120 hectares of forest (about 4,400 football pitches): 29% of the forest it had in 2000. Most of it (76%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 3,120 haabout 4,400 football pitches
- Share of its forest
- 29%of what there was in 2000
- Cleared for good
- 2,380 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 195 hectares a year in 2021–2025, against 238 hectares a year in 2016–2020. The worst year was 2020, when about 301 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 | 57 ha | 25 ha | 83 ha |
| 2002 | 60 ha | 33 ha | 93 ha |
| 2003 | 10 ha | 1 ha | 11 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 2 ha | under 1 ha | 3 ha |
| 2006 | 14 ha | 5 ha | 18 ha |
| 2007 | 40 ha | 7 ha | 47 ha |
| 2008 | 58 ha | 26 ha | 84 ha |
| 2009 | 134 ha | 60 ha | 194 ha |
| 2010 | 7 ha | under 1 ha | 8 ha |
| 2011 | 22 ha | 30 ha | 52 ha |
| 2012 | 52 ha | 18 ha | 69 ha |
| 2013 | 79 ha | 27 ha | 105 ha |
| 2014 | 92 ha | 28 ha | 120 ha |
| 2015 | 61 ha | 14 ha | 74 ha |
| 2016 | 121 ha | 39 ha | 160 ha |
| 2017 | 204 ha | 39 ha | 243 ha |
| 2018 | 193 ha | 49 ha | 242 ha |
| 2019 | 206 ha | 38 ha | 244 ha |
| 2020 | 235 ha | 66 ha | 301 ha |
| 2021 | 113 ha | 54 ha | 167 ha |
| 2022 | 140 ha | 39 ha | 179 ha |
| 2023 | 150 ha | 48 ha | 198 ha |
| 2024 | 140 ha | 40 ha | 180 ha |
| 2025 | 190 ha | 59 ha | 249 ha |
What is causing deforestation around Buchanan?
- Farms, pasture and plantationscleared for good72% · 2,250 ha
- Shifting farmingcan grow back24% · 741 ha
- Towns and roadscleared for good3.3% · 103 ha
Also: mining and energy, storms, floods and other natural causes, 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
- 10,200 ha
- Forest in 2020
- 9,260 ha
- Overall change
- −897 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Buchanan shrank from about 10,200 hectares to 9,260 hectares, a net loss of about 897 hectares (−8.8%). New forest grew on about 267 hectares, but 1,170 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 Buchanan
What is the air quality (AQI) in Buchanan right now?
The latest reading for Buchanan shows an AQI of 28 (Good), observed Nov 11, 06:00 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 Buchanan today?
At AQI 28 (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 Buchanan been like this week?
Over the last 7 days, the CAMS air-quality model put Buchanan's daily AQI at 38 on average, from 21 on Nov 5 to an hourly peak of 60 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Buchanan lost since 2001?
Since 2001, the area within 10 km of Buchanan has lost about 3,120 hectares of forest (about 4,400 football pitches): 29% of the forest it had in 2000. Most of it (76%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss has stayed about the same: about 195 hectares a year in 2021–2025, against 238 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Buchanan shrank from about 10,200 hectares to 9,260 hectares, a net loss of about 897 hectares (−8.8%). New forest grew on about 267 hectares, but 1,170 hectares were lost.
What is the tree count in Buchanan?
Buchanan has an estimated 42,450 trees across the 3.3 sq mi (8.54 km²) of land measured — 19.9% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Buchanan need?
Buchanan needs roughly 21,545 more trees to close a 10-point shortfall against its 30% tree-cover target — about 474.0 t of extra CO₂ absorbed per year once grown.
How are Buchanan'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 Buchanan; the tree count is an estimate derived from that cover.
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