City report · Yunnan, China
Ning’er Air quality today
Air quality in Ning’er 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)
- 9.1
- tree cover
- 50.7%
- trees in this area
- 159K
- more trees needed
- 0
Measured across a 2 km radius around Ninger, Puer, Yunnan, China (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ning’er · AQI 51 (Moderate)
Ning’er's tree count comes to 159,119 trees across 12.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ning’er today: AQI 51, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Puer No2 middle school, Pu'er (普洱普洱第二中学), 23.8 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.1
PM10
17.3
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 Ning’er's daily AQI at 26 on average, from 15 on Nov 10 to an hourly peak of 62 on Nov 5.
Where Ning’er stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ning’er: Healthy tree cover
50.7% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
159,119
Target trees
159,119
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ning’er lost?
Since 2001, the area within 10 km of Ning’er has lost about 1,580 hectares of forest (about 2,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 467 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns.
2021: satellite photo from February 2021 of a 5 × 5 km area about 7 km southwest of the city center.
- Forest lost since 2001
- 1,580 haabout 2,200 football pitches
- Share of its forest
- 11%of what there was in 2000
- Cleared for good
- 467 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 45 hectares a year in 2021–2025, down from 68 hectares a year in 2016–2020. The worst year was 2014, when about 250 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 | 4 ha | 3 ha | 7 ha |
| 2002 | 7 ha | 8 ha | 16 ha |
| 2003 | 9 ha | 19 ha | 28 ha |
| 2004 | 3 ha | 4 ha | 7 ha |
| 2005 | 1 ha | 6 ha | 7 ha |
| 2006 | 15 ha | 71 ha | 87 ha |
| 2007 | 34 ha | 64 ha | 97 ha |
| 2008 | 12 ha | 15 ha | 27 ha |
| 2009 | 21 ha | 78 ha | 99 ha |
| 2010 | 35 ha | 58 ha | 93 ha |
| 2011 | 9 ha | 11 ha | 19 ha |
| 2012 | 48 ha | 70 ha | 118 ha |
| 2013 | 9 ha | 90 ha | 99 ha |
| 2014 | 25 ha | 225 ha | 250 ha |
| 2015 | 26 ha | 38 ha | 64 ha |
| 2016 | 24 ha | 20 ha | 45 ha |
| 2017 | 48 ha | 28 ha | 76 ha |
| 2018 | 26 ha | 53 ha | 79 ha |
| 2019 | 12 ha | 67 ha | 79 ha |
| 2020 | 9 ha | 55 ha | 64 ha |
| 2021 | 17 ha | 27 ha | 44 ha |
| 2022 | 7 ha | 27 ha | 34 ha |
| 2023 | 25 ha | 29 ha | 54 ha |
| 2024 | 16 ha | 25 ha | 40 ha |
| 2025 | 29 ha | 24 ha | 52 ha |
What is causing deforestation around Ning’er?
- Loggingcan grow back70% · 1,100 ha
- Farms, pasture and plantationscleared for good17% · 271 ha
- Towns and roadscleared for good7.3% · 116 ha
Also: mining and energy, storms, floods and other natural causes, 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
- 21,800 ha
- Forest in 2020
- 22,600 ha
- Overall change
- +807 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ning’er grew from about 21,800 hectares to 22,600 hectares, a net gain of about 807 hectares (+3.7%). New forest grew on about 1,390 hectares, while 583 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 Ning’er
What is the air quality (AQI) in Ning’er right now?
The latest reading for Ning’er shows an AQI of 51 (Moderate), measured Nov 12, 01:00 local time by the Puer No2 middle school, Pu'er (普洱普洱第二中学) ground monitoring station, 23.8 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 Ning’er 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 Ning’er been like this week?
Over the last 7 days, the CAMS air-quality model put Ning’er's daily AQI at 26 on average, from 15 on Nov 10 to an hourly peak of 62 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Ning’er lost since 2001?
Since 2001, the area within 10 km of Ning’er has lost about 1,580 hectares of forest (about 2,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 467 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 45 hectares a year in 2021–2025, down from 68 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Ning’er grew from about 21,800 hectares to 22,600 hectares, a net gain of about 807 hectares (+3.7%). New forest grew on about 1,390 hectares, while 583 hectares were lost.
What is the tree count in Ning’er?
Ning’er has an estimated 159,119 trees across the 12.56 km² of land measured — 50.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ning’er need?
Ning’er has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ning’er's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Ninger, 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 Ninger; the tree count is an estimate derived from that cover.
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