City report · Yunnan, China
Yuxi Air quality today
Air quality in Yuxi currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 53
Moderate
- PM2.5, fine particles (µg/m³)
- 10.1
- tree cover
- 15.9%
- trees in this area
- 49.8K
- more trees needed
- 44.1K
Measured across a 2 km radius around Hongta District, Yuxi, Yunnan, China (12.57 km²), from a satellite image of Sep 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yuxi · AQI 53 (Moderate)
Yuxi's tree count comes to 49,752 trees across 12.52 km² of land, 14 points below the 30% tree-cover level considered healthy for this area, so roughly 44,119 more trees would close the gap.
Air quality detail
Air quality in Yuxi today: AQI 53, 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 · Yuxi (玉溪), 500 m away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.1
PM10
31.3
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Yunnan Environmental Protection Agency (云南省环境保护厅)
- 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 Yuxi's daily AQI at 31 on average, from 20 on Nov 9 to an hourly peak of 68 on Nov 6.
Where Yuxi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yuxi: Critically low
15.9% tree cover against a 30% healthy-neighborhood target, across 12.52 km² of land.
Trees in this area
49,752
Target trees
93,871
More trees needed
44,119
CO₂ if planted / yr
970.6 t
Deforestation · 2001–2025
How much forest has Yuxi lost?
Since 2001, the area within 10 km of Yuxi has lost about 1,410 hectares of forest (about 2,000 football pitches): 22% of the forest it had in 2000. Most of it was lost to wildfires, so much of it can grow back. About 133 hectares (9.4%) was deforestation: forest cleared for good for farms, mines or towns.
2018: satellite photo from February 2018 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 1,410 haabout 2,000 football pitches
- Share of its forest
- 22%of what there was in 2000
- Cleared for good
- 133 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 193 hectares a year in 2021–2025, up from 15 hectares a year in 2016–2020. The worst year was 2023, when about 896 hectares of forest were lost, mostly to wildfires.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | under 1 ha | 3 ha | 3 ha |
| 2002 | under 1 ha | 1 ha | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | 6 ha | 6 ha |
| 2005 | under 1 ha | 24 ha | 24 ha |
| 2006 | 6 ha | 56 ha | 61 ha |
| 2007 | 2 ha | 73 ha | 75 ha |
| 2008 | 2 ha | 16 ha | 19 ha |
| 2009 | under 1 ha | 5 ha | 6 ha |
| 2010 | 7 ha | 36 ha | 43 ha |
| 2011 | under 1 ha | 11 ha | 12 ha |
| 2012 | 4 ha | 55 ha | 59 ha |
| 2013 | 6 ha | 9 ha | 15 ha |
| 2014 | 27 ha | 8 ha | 35 ha |
| 2015 | 8 ha | under 1 ha | 8 ha |
| 2016 | 7 ha | 2 ha | 8 ha |
| 2017 | 12 ha | under 1 ha | 13 ha |
| 2018 | 16 ha | 11 ha | 27 ha |
| 2019 | 5 ha | 12 ha | 17 ha |
| 2020 | 4 ha | 5 ha | 9 ha |
| 2021 | 7 ha | 3 ha | 10 ha |
| 2022 | 6 ha | 2 ha | 8 ha |
| 2023 | 11 ha | 885 ha | 896 ha |
| 2024 | 1 ha | 45 ha | 46 ha |
| 2025 | 1 ha | 5 ha | 6 ha |
What is causing deforestation around Yuxi?
- Wildfirescan grow back80% · 1,120 ha
- Loggingcan grow back11% · 148 ha
- Mining and energycleared for good5.3% · 75 ha
Also: towns and roads, farms, pasture and plantations, 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
- 8,980 ha
- Forest in 2020
- 9,800 ha
- Overall change
- +824 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yuxi grew from about 8,980 hectares to 9,800 hectares, a net gain of about 824 hectares (+9.2%). New forest grew on about 1,240 hectares, while 413 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 Yuxi
What is the air quality (AQI) in Yuxi right now?
The latest reading for Yuxi shows an AQI of 53 (Moderate), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Yuxi (玉溪), 500 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Yuxi today?
At AQI 53 (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 Yuxi been like this week?
Over the last 7 days, the CAMS air-quality model put Yuxi's daily AQI at 31 on average, from 20 on Nov 9 to an hourly peak of 68 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 Yuxi lost since 2001?
Since 2001, the area within 10 km of Yuxi has lost about 1,410 hectares of forest (about 2,000 football pitches): 22% of the forest it had in 2000. Most of it was lost to wildfires, so much of it can grow back. About 133 hectares (9.4%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 193 hectares a year in 2021–2025, up from 15 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Yuxi grew from about 8,980 hectares to 9,800 hectares, a net gain of about 824 hectares (+9.2%). New forest grew on about 1,240 hectares, while 413 hectares were lost.
What is the tree count in Yuxi?
Yuxi has an estimated 49,752 trees across the 12.52 km² of land measured — 15.9% tree cover, 14 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Yuxi need?
Yuxi needs roughly 44,119 more trees to close a 14-point shortfall against its 30% tree-cover target — about 970.6 t of extra CO₂ absorbed per year once grown.
How are Yuxi's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Hongta District, 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 Hongta District; the tree count is an estimate derived from that cover.
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