City report · Guizhou, China
Duyun Air quality today
Air quality in Duyun currently reads AQI 39 (Good): Air quality is satisfactory for everyone.
AQI 39
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 7.5
- tree cover
- 42.2%
- trees in this area
- 130K
- more trees needed
- 0
Measured across a 2 km radius around Duyun, Qiannan Buyei and Miao Autonomous Prefecture, Guizhou, China (12.57 km²), from a satellite image of Oct 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Duyun · AQI 39 (Good)
Duyun's tree count comes to 130,454 trees across 12.37 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Duyun today: AQI 39, Good
Main pollutant: PM2.5 · Observed Nov 11, 18:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 185 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 185 km, e.g. Guiyang and Zunyi
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.5
PM10
12.4
NO₂
11.3
O₃
82.0
SO₂
14.9
CO
863.0
- 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 Duyun's daily AQI at 50 on average, from 32 on Nov 8 to an hourly peak of 137 on Nov 11.
Where Duyun stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Duyun: Healthy tree cover
42.2% tree cover against a 30% healthy-neighborhood target, across 12.37 km² of land.
Trees in this area
130,454
Target trees
130,454
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Duyun lost?
Since 2001, the area within 10 km of Duyun has lost about 1,020 hectares of forest (about 1,400 football pitches): 8% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from October 2017 of a 5 × 5 km area about 4 km northeast of the city center.
- Forest lost since 2001
- 1,020 haabout 1,400 football pitches
- Share of its forest
- 8%of what there was in 2000
- Cleared for good
- 742 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 14 hectares a year in 2021–2025, down from 60 hectares a year in 2016–2020. The worst year was 2008, when about 133 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 | 8 ha | 12 ha | 19 ha |
| 2002 | 13 ha | 3 ha | 16 ha |
| 2003 | 5 ha | 7 ha | 12 ha |
| 2004 | 3 ha | 2 ha | 5 ha |
| 2005 | 16 ha | 28 ha | 45 ha |
| 2006 | 1 ha | 2 ha | 3 ha |
| 2007 | 14 ha | 12 ha | 26 ha |
| 2008 | 76 ha | 57 ha | 133 ha |
| 2009 | 17 ha | 10 ha | 27 ha |
| 2010 | 40 ha | 85 ha | 125 ha |
| 2011 | 32 ha | 10 ha | 41 ha |
| 2012 | 23 ha | 2 ha | 24 ha |
| 2013 | 53 ha | under 1 ha | 54 ha |
| 2014 | 79 ha | 4 ha | 84 ha |
| 2015 | 36 ha | 1 ha | 37 ha |
| 2016 | 119 ha | 5 ha | 124 ha |
| 2017 | 96 ha | 8 ha | 104 ha |
| 2018 | 27 ha | 2 ha | 29 ha |
| 2019 | 24 ha | 5 ha | 29 ha |
| 2020 | 12 ha | 2 ha | 14 ha |
| 2021 | 8 ha | 2 ha | 9 ha |
| 2022 | 6 ha | 3 ha | 9 ha |
| 2023 | 9 ha | 7 ha | 16 ha |
| 2024 | 19 ha | 4 ha | 22 ha |
| 2025 | 8 ha | 5 ha | 13 ha |
What is causing deforestation around Duyun?
- Towns and roadscleared for good59% · 607 ha
- Loggingcan grow back27% · 273 ha
- Farms, pasture and plantationscleared for good6.8% · 70 ha
Also: mining and energy, 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
- 22,300 ha
- Forest in 2020
- 21,500 ha
- Overall change
- −801 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Duyun shrank from about 22,300 hectares to 21,500 hectares, a net loss of about 801 hectares (−3.6%). New forest grew on about 224 hectares, but 1,030 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 Duyun
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Duyun with anywhere
This place
Duyun
Use this data
Put Duyun's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Duyun
What is the air quality (AQI) in Duyun right now?
The latest reading for Duyun shows an AQI of 39 (Good), observed Nov 11, 18:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 185 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Duyun today?
At AQI 39 (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 Duyun been like this week?
Over the last 7 days, the CAMS air-quality model put Duyun's daily AQI at 50 on average, from 32 on Nov 8 to an hourly peak of 137 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Duyun lost since 2001?
Since 2001, the area within 10 km of Duyun has lost about 1,020 hectares of forest (about 1,400 football pitches): 8% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 14 hectares a year in 2021–2025, down from 60 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Duyun shrank from about 22,300 hectares to 21,500 hectares, a net loss of about 801 hectares (−3.6%). New forest grew on about 224 hectares, but 1,030 hectares were lost.
What is the tree count in Duyun?
Duyun has an estimated 130,454 trees across the 12.37 km² of land measured — 42.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Duyun need?
Duyun has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Duyun'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 2 km radius around Duyun; 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