City report · Guizhou, China
Kaili Air quality today
Air quality in Kaili currently reads AQI 51 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 51
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 9.5
- tree cover
- 18.1%
- trees in this area
- 56.9K
- more trees needed
- 37.4K
Measured across a 2 km radius around Kaili City, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou, China (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kaili · AQI 51 (Moderate)
Kaili's tree count comes to 56,863 trees across 12.57 km², 12 points below the 30% tree-cover level considered healthy for this area, so roughly 37,385 more trees would close the gap.
Air quality detail
Air quality in Kaili today: AQI 51, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 225 km, e.g. Guiyang and Zunyi
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.5
PM10
19.8
NO₂
3.8
O₃
86.0
SO₂
8.7
CO
252.0
- 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 Kaili's daily AQI at 45 on average, from 26 on Nov 8 to an hourly peak of 76 on Nov 4.
Where Kaili stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kaili: Below target
18.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
56,863
Target trees
94,248
More trees needed
37,385
CO₂ if planted / yr
822.5 t
Deforestation · 2001–2025
How much forest has Kaili lost?
Since 2001, the area within 10 km of Kaili has lost about 606 hectares of forest (about 850 football pitches): 7.1% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from October 2017 of a 5 × 5 km area about 6 km northeast of the city center.
- Forest lost since 2001
- 606 haabout 850 football pitches
- Share of its forest
- 7.1%of what there was in 2000
- Cleared for good
- 410 hadeforestation: turned into farms, mines or towns
The worst year was 2018, when about 83 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 | 3 ha | 1 ha | 4 ha |
| 2002 | 11 ha | 7 ha | 18 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | under 1 ha | 2 ha | 2 ha |
| 2005 | under 1 ha | 1 ha | 2 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 11 ha | 9 ha | 20 ha |
| 2008 | 38 ha | 31 ha | 69 ha |
| 2009 | 1 ha | 7 ha | 8 ha |
| 2010 | 14 ha | 1 ha | 16 ha |
| 2011 | 8 ha | 6 ha | 14 ha |
| 2012 | 28 ha | under 1 ha | 28 ha |
| 2013 | 48 ha | 6 ha | 55 ha |
| 2014 | 19 ha | 5 ha | 24 ha |
| 2015 | 18 ha | 3 ha | 21 ha |
| 2016 | 19 ha | 5 ha | 23 ha |
| 2017 | 55 ha | 2 ha | 57 ha |
| 2018 | 68 ha | 16 ha | 83 ha |
| 2019 | 17 ha | 10 ha | 27 ha |
| 2020 | 18 ha | 7 ha | 25 ha |
| 2021 | 15 ha | 10 ha | 24 ha |
| 2022 | 5 ha | 29 ha | 33 ha |
| 2023 | 4 ha | 35 ha | 39 ha |
| 2024 | 2 ha | 4 ha | 6 ha |
| 2025 | 7 ha | under 1 ha | 8 ha |
What is causing deforestation around Kaili?
- Towns and roadscleared for good54% · 329 ha
- Loggingcan grow back31% · 190 ha
- Mining and energycleared for good12% · 71 ha
Also: 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
- 20,500 ha
- Forest in 2020
- 19,700 ha
- Overall change
- −852 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kaili shrank from about 20,500 hectares to 19,700 hectares, a net loss of about 852 hectares (−4.2%). New forest grew on about 272 hectares, but 1,120 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 Kaili
What is the air quality (AQI) in Kaili right now?
The latest reading for Kaili shows an AQI of 51 (Moderate), observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Kaili today?
At AQI 51 (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 Kaili been like this week?
Over the last 7 days, the CAMS air-quality model put Kaili's daily AQI at 45 on average, from 26 on Nov 8 to an hourly peak of 76 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Kaili lost since 2001?
Since 2001, the area within 10 km of Kaili has lost about 606 hectares of forest (about 850 football pitches): 7.1% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Kaili shrank from about 20,500 hectares to 19,700 hectares, a net loss of about 852 hectares (−4.2%). New forest grew on about 272 hectares, but 1,120 hectares were lost.
What is the tree count in Kaili?
Kaili has an estimated 56,863 trees across the 12.57 km² measured — 18.1% tree cover, 12 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Kaili need?
Kaili needs roughly 37,385 more trees to close a 12-point shortfall against its 30% tree-cover target — about 822.5 t of extra CO₂ absorbed per year once grown.
How are Kaili'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 Kaili City; the tree count is an estimate derived from that cover.
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