City report · Hainan, China
Basuo Air quality today
Air quality in Basuo currently reads AQI 69 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 69
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 18.5
- tree cover
- 21.3%
- trees in this area
- 66.3K
- more trees needed
- 27.1K
Measured across a 2 km radius around Dongfang, Hainan, China (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Basuo · AQI 69 (Moderate)
Basuo's tree count comes to 66,314 trees across 12.46 km² of land, 9 points below the 30% tree-cover level considered healthy for this area, so roughly 27,086 more trees would close the gap.
Air quality detail
Air quality in Basuo today: AQI 69, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · City Land Resources Bureau station , Dongfang (东方市国土资源局站), 1.3 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.5
PM10
37.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Hainan Environmental Protection Agency (海南省国土环境资源厅)
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Basuo's daily AQI at 54 on average, from 37 on Nov 9 to an hourly peak of 77 on Nov 6.
Where Basuo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Basuo: Below target
21.3% tree cover against a 30% healthy-neighborhood target, across 12.46 km² of land.
Trees in this area
66,314
Target trees
93,400
More trees needed
27,086
CO₂ if planted / yr
595.9 t
Deforestation · 2001–2025
How much forest has Basuo lost?
Since 2001, the area within 10 km of Basuo has lost about 71 hectares of forest (about 100 football pitches): 45% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from April 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 71 haabout 100 football pitches
- Share of its forest
- 45%of what there was in 2000
- Cleared for good
- 60 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 12 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 | 12 ha | under 1 ha | 12 ha |
| 2002 | 3 ha | 2 ha | 5 ha |
| 2003 | 10 ha | under 1 ha | 10 ha |
| 2004 | 5 ha | under 1 ha | 5 ha |
| 2005 | 2 ha | 1 ha | 3 ha |
| 2006 | 2 ha | under 1 ha | 3 ha |
| 2007 | 3 ha | under 1 ha | 3 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 6 ha | 1 ha | 7 ha |
| 2010 | 4 ha | under 1 ha | 5 ha |
| 2011 | 1 ha | 1 ha | 3 ha |
| 2012 | 6 ha | under 1 ha | 6 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 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Basuo?
- Farms, pasture and plantationscleared for good70% · 50 ha
- Towns and roadscleared for good15% · 11 ha
- Loggingcan grow back14% · 10 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
- 826 ha
- Forest in 2020
- 934 ha
- Overall change
- +108 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Basuo grew from about 826 hectares to 934 hectares, a net gain of about 108 hectares (+13%). New forest grew on about 277 hectares, while 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 Basuo
What is the air quality (AQI) in Basuo right now?
The latest reading for Basuo shows an AQI of 69 (Moderate), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is City Land Resources Bureau station , Dongfang (东方市国土资源局站), 1.3 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Basuo today?
At AQI 69 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Basuo been like this week?
Over the last 7 days, the CAMS air-quality model put Basuo's daily AQI at 54 on average, from 37 on Nov 9 to an hourly peak of 77 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 Basuo lost since 2001?
Since 2001, the area within 10 km of Basuo has lost about 71 hectares of forest (about 100 football pitches): 45% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Basuo grew from about 826 hectares to 934 hectares, a net gain of about 108 hectares (+13%). New forest grew on about 277 hectares, while 170 hectares were lost.
What is the tree count in Basuo?
Basuo has an estimated 66,314 trees across the 12.46 km² of land measured — 21.3% tree cover, 9 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Basuo need?
Basuo needs roughly 27,086 more trees to close a 9-point shortfall against its 30% tree-cover target — about 595.9 t of extra CO₂ absorbed per year once grown.
How are Basuo's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Dongfang, 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 Dongfang; the tree count is an estimate derived from that cover.
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