City report · Jiangxi, China
Jianchang Air quality today
Air quality in Jianchang currently reads AQI 37 (Good): Air quality is satisfactory for everyone.
AQI 37
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 8.3
- tree cover
- 9.9%
- trees in this area
- 27.3K
- more trees needed
- 55.4K
Measured across a 2 km radius around Nancheng County, Fuzhou, Jiangxi, China (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Jianchang · AQI 37 (Good)
Jianchang's tree count comes to 27,307 trees across 11.04 km² of land, 20 points below the 30% tree-cover level considered healthy for this area, so roughly 55,442 more trees would close the gap.
Air quality detail
Air quality in Jianchang today: AQI 37, Good
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 165 km, e.g. Fuzhou and Yingtan
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.3
PM10
14.3
NO₂
9.9
O₃
76.0
SO₂
4.1
CO
277.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Jianchang's daily AQI at 51 on average, from 41 on Nov 7 to an hourly peak of 84 on Nov 10.
Where Jianchang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jianchang: Critically low
9.9% tree cover against a 30% healthy-neighborhood target, across 11.04 km² of land.
Trees in this area
27,307
Target trees
82,749
More trees needed
55,442
CO₂ if planted / yr
1,220 t
Deforestation · 2001–2025
How much forest has Jianchang lost?
Since 2001, the area within 10 km of Jianchang has lost about 2,080 hectares of forest (about 2,900 football pitches): 18% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 173 hectares (8.3%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from December 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 2,080 haabout 2,900 football pitches
- Share of its forest
- 18%of what there was in 2000
- Cleared for good
- 173 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 142 hectares a year in 2021–2025, up from 20 hectares a year in 2016–2020. The worst year was 2008, when about 379 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 | 14 ha | 14 ha |
| 2002 | under 1 ha | 16 ha | 16 ha |
| 2003 | 1 ha | 9 ha | 11 ha |
| 2004 | 1 ha | 30 ha | 31 ha |
| 2005 | 4 ha | 76 ha | 80 ha |
| 2006 | under 1 ha | 45 ha | 46 ha |
| 2007 | 7 ha | 74 ha | 81 ha |
| 2008 | 34 ha | 346 ha | 379 ha |
| 2009 | 27 ha | 133 ha | 160 ha |
| 2010 | 19 ha | 90 ha | 109 ha |
| 2011 | 5 ha | 130 ha | 135 ha |
| 2012 | 2 ha | 83 ha | 85 ha |
| 2013 | 3 ha | 18 ha | 21 ha |
| 2014 | 2 ha | 57 ha | 59 ha |
| 2015 | 6 ha | 39 ha | 45 ha |
| 2016 | 5 ha | 28 ha | 33 ha |
| 2017 | 2 ha | 27 ha | 29 ha |
| 2018 | under 1 ha | 7 ha | 8 ha |
| 2019 | 9 ha | 10 ha | 19 ha |
| 2020 | 3 ha | 8 ha | 11 ha |
| 2021 | 6 ha | 39 ha | 45 ha |
| 2022 | 3 ha | 85 ha | 88 ha |
| 2023 | 9 ha | 173 ha | 182 ha |
| 2024 | 13 ha | 171 ha | 183 ha |
| 2025 | 13 ha | 200 ha | 213 ha |
What is causing deforestation around Jianchang?
- Loggingcan grow back82% · 1,710 ha
- Wildfirescan grow back8.9% · 186 ha
- Mining and energycleared for good4.2% · 87 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
- 16,700 ha
- Forest in 2020
- 16,800 ha
- Overall change
- +91 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Jianchang stayed about the same size, at about 16,800 hectares: new forest grew on about 333 hectares, and about 242 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
In the same region
Measured cities near Jianchang
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Jianchang with anywhere
This place
Jianchang
Use this data
Put Jianchang's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Jianchang
What is the air quality (AQI) in Jianchang right now?
The latest reading for Jianchang shows an AQI of 37 (Good), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 165 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Jianchang today?
At AQI 37 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Jianchang been like this week?
Over the last 7 days, the CAMS air-quality model put Jianchang's daily AQI at 51 on average, from 41 on Nov 7 to an hourly peak of 84 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Jianchang lost since 2001?
Since 2001, the area within 10 km of Jianchang has lost about 2,080 hectares of forest (about 2,900 football pitches): 18% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 173 hectares (8.3%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 142 hectares a year in 2021–2025, up from 20 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Jianchang stayed about the same size, at about 16,800 hectares: new forest grew on about 333 hectares, and about 242 hectares were lost.
What is the tree count in Jianchang?
Jianchang has an estimated 27,307 trees across the 11.04 km² of land measured — 9.9% tree cover, 20 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Jianchang need?
Jianchang needs roughly 55,442 more trees to close a 20-point shortfall against its 30% tree-cover target — about 1,220 t of extra CO₂ absorbed per year once grown.
How are Jianchang'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 Nancheng County; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address