City report · Jiangxi, China
Pengze Air quality today
Air quality in Pengze currently reads AQI 51 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 51
Moderate
- PM2.5, fine particles (µg/m³)
- 9.0
- tree cover
- 58.1%
- trees in this area
- 125K
- more trees needed
- 0
Measured across a 2 km radius around Pengze County, Jiujiang, Jiangxi, China (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Pengze · AQI 51 (Moderate)
Pengze's tree count comes to 125,396 trees across 8.64 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Pengze today: AQI 51, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 165 km, e.g. Jiujiang and Anqing
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.0
PM10
14.6
NO₂
9.7
O₃
92.0
SO₂
5.1
CO
339.0
- 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 Pengze's daily AQI at 75 on average, from 54 on Nov 10 to an hourly peak of 151 on Nov 7.
Where Pengze stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Pengze: Healthy tree cover
58.1% tree cover against a 30% healthy-neighborhood target, across 8.64 km² of land.
Trees in this area
125,396
Target trees
125,396
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Pengze lost?
Since 2001, the area within 10 km of Pengze has lost about 491 hectares of forest (about 690 football pitches): 19% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 193 hectares (39%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from January 2017 of a 5 × 5 km area about 5 km northeast of the city center.
- Forest lost since 2001
- 491 haabout 690 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 193 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 93 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 | under 1 ha | 3 ha | 3 ha |
| 2002 | 4 ha | 2 ha | 6 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | 7 ha | 9 ha | 16 ha |
| 2005 | under 1 ha | 1 ha | 2 ha |
| 2006 | 6 ha | under 1 ha | 7 ha |
| 2007 | 10 ha | 22 ha | 33 ha |
| 2008 | 2 ha | 28 ha | 30 ha |
| 2009 | 10 ha | 10 ha | 20 ha |
| 2010 | 29 ha | 64 ha | 93 ha |
| 2011 | 15 ha | 8 ha | 23 ha |
| 2012 | 28 ha | 42 ha | 70 ha |
| 2013 | 3 ha | 2 ha | 4 ha |
| 2014 | 6 ha | 13 ha | 20 ha |
| 2015 | 1 ha | 5 ha | 7 ha |
| 2016 | 8 ha | 23 ha | 31 ha |
| 2017 | 19 ha | 36 ha | 54 ha |
| 2018 | 8 ha | 4 ha | 12 ha |
| 2019 | 2 ha | 2 ha | 4 ha |
| 2020 | 2 ha | 2 ha | 3 ha |
| 2021 | 2 ha | 4 ha | 5 ha |
| 2022 | 3 ha | 2 ha | 4 ha |
| 2023 | 3 ha | 5 ha | 8 ha |
| 2024 | 16 ha | 8 ha | 24 ha |
| 2025 | 6 ha | 3 ha | 9 ha |
What is causing deforestation around Pengze?
- Loggingcan grow back60% · 296 ha
- Towns and roadscleared for good34% · 167 ha
- Farms, pasture and plantationscleared for good5.1% · 25 ha
Also: 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
- 4,620 ha
- Forest in 2020
- 4,450 ha
- Overall change
- −171 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Pengze shrank from about 4,620 hectares to 4,450 hectares, a net loss of about 171 hectares (−3.7%). New forest grew on about 183 hectares, but 354 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 Pengze
What is the air quality (AQI) in Pengze right now?
The latest reading for Pengze shows an AQI of 51 (Moderate), observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 165 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 Pengze 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 Pengze been like this week?
Over the last 7 days, the CAMS air-quality model put Pengze's daily AQI at 75 on average, from 54 on Nov 10 to an hourly peak of 151 on Nov 7. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Pengze lost since 2001?
Since 2001, the area within 10 km of Pengze has lost about 491 hectares of forest (about 690 football pitches): 19% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 193 hectares (39%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Pengze shrank from about 4,620 hectares to 4,450 hectares, a net loss of about 171 hectares (−3.7%). New forest grew on about 183 hectares, but 354 hectares were lost.
What is the tree count in Pengze?
Pengze has an estimated 125,396 trees across the 8.64 km² of land measured — 58.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Pengze need?
Pengze has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Pengze'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 Pengze County; the tree count is an estimate derived from that cover.
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