City report · Guangxi, China
Hechi Air quality today
Air quality in Hechi currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 64
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 15.9
- tree cover
- 53.9%
- trees in this area
- 167K
- more trees needed
- 0
Measured across a 2 km radius around Jinchengjiang District, Hechi, Guangxi, China (12.57 km²), from a satellite image of Aug 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hechi · AQI 64 (Moderate)
Hechi's tree count comes to 166,961 trees across 12.39 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Hechi today: AQI 64, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · City EPA station, Hechi (河池市环保站), 3 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.9
PM10
32.4
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Guangxi Zhuang Autonomous Region Environmental Protection Agency (广西壮族自治区环境保护厅)
- 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 Hechi's daily AQI at 45 on average, from 34 on Nov 6 to an hourly peak of 71 on Nov 8.
Where Hechi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hechi: Healthy tree cover
53.9% tree cover against a 30% healthy-neighborhood target, across 12.39 km² of land.
Trees in this area
166,961
Target trees
166,961
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Hechi lost?
Since 2001, the area within 10 km of Hechi has lost about 366 hectares of forest (about 510 football pitches): 2.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 155 hectares (42%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from November 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 366 haabout 510 football pitches
- Share of its forest
- 2.7%of what there was in 2000
- Cleared for good
- 155 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 49 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 | 7 ha | 14 ha | 21 ha |
| 2002 | 2 ha | 3 ha | 5 ha |
| 2003 | under 1 ha | 2 ha | 2 ha |
| 2004 | 5 ha | 7 ha | 12 ha |
| 2005 | 9 ha | 8 ha | 17 ha |
| 2006 | 2 ha | 8 ha | 10 ha |
| 2007 | 3 ha | 5 ha | 8 ha |
| 2008 | 26 ha | 23 ha | 49 ha |
| 2009 | 18 ha | 6 ha | 24 ha |
| 2010 | 2 ha | 4 ha | 5 ha |
| 2011 | 6 ha | 3 ha | 9 ha |
| 2012 | under 1 ha | 1 ha | 2 ha |
| 2013 | under 1 ha | 12 ha | 13 ha |
| 2014 | 4 ha | 6 ha | 11 ha |
| 2015 | 1 ha | 3 ha | 4 ha |
| 2016 | 9 ha | 24 ha | 33 ha |
| 2017 | 10 ha | 3 ha | 13 ha |
| 2018 | 5 ha | 5 ha | 9 ha |
| 2019 | 13 ha | 9 ha | 22 ha |
| 2020 | 3 ha | 10 ha | 13 ha |
| 2021 | 7 ha | 10 ha | 16 ha |
| 2022 | 7 ha | 17 ha | 24 ha |
| 2023 | 4 ha | 14 ha | 18 ha |
| 2024 | 7 ha | 8 ha | 15 ha |
| 2025 | 4 ha | 9 ha | 13 ha |
What is causing deforestation around Hechi?
- Loggingcan grow back51% · 187 ha
- Mining and energycleared for good18% · 66 ha
- Towns and roadscleared for good14% · 53 ha
Also: farms, pasture and plantations, storms, floods and other natural causes, shifting farming, 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
- 24,100 ha
- Forest in 2020
- 24,100 ha
- Overall change
- −2 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hechi stayed about the same size, at about 24,100 hectares: new forest grew on about 367 hectares, and about 369 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 Hechi
What is the air quality (AQI) in Hechi right now?
The latest reading for Hechi shows an AQI of 64 (Moderate), measured Nov 11, 23:00 local time by the City EPA station, Hechi (河池市环保站) ground monitoring station, 3 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Hechi today?
At AQI 64 (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 Hechi been like this week?
Over the last 7 days, the CAMS air-quality model put Hechi's daily AQI at 45 on average, from 34 on Nov 6 to an hourly peak of 71 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Hechi lost since 2001?
Since 2001, the area within 10 km of Hechi has lost about 366 hectares of forest (about 510 football pitches): 2.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 155 hectares (42%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hechi stayed about the same size, at about 24,100 hectares: new forest grew on about 367 hectares, and about 369 hectares were lost.
What is the tree count in Hechi?
Hechi has an estimated 166,961 trees across the 12.39 km² of land measured — 53.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hechi need?
Hechi has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Hechi's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jinchengjiang 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 Jinchengjiang District; the tree count is an estimate derived from that cover.
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