City report · Guangdong, China
Jiazi Air quality today
Air quality in Jiazi currently reads AQI 52 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 52
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 9.2
- tree cover
- 20.0%
- trees in this area
- 43.9K
- more trees needed
- 22.0K
Measured across a 2 km radius around Lufeng, Guangdong, Shanwei, Guangdong Province, China (12.57 km²), from a satellite image of Sep 17, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Jiazi · AQI 52 (Moderate)
Jiazi's tree count comes to 43,919 trees across 8.79 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 21,960 more trees would close the gap.
Air quality detail
Air quality in Jiazi today: AQI 52, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 03:00 local time via Open-Meteo / CAMS, corrected with 16 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 16 station cities within 165 km, e.g. Shanwei and Jieyang
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.2
PM10
15.5
NO₂
13.0
O₃
67.0
SO₂
6.0
CO
229.0
- 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 Jiazi's daily AQI at 64 on average, from 43 on Nov 10 to an hourly peak of 103 on Nov 6.
Where Jiazi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jiazi: Below target
20.0% tree cover against a 30% healthy-neighborhood target, across 8.79 km² of land.
Trees in this area
43,919
Target trees
65,879
More trees needed
21,960
CO₂ if planted / yr
483.1 t
Deforestation · 2001–2025
How much forest has Jiazi lost?
Since 2001, the area within 10 km of Jiazi has lost about 37 hectares of forest (about 51 football pitches): 19% of the forest it had in 2000. Most of it (64%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from October 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 37 haabout 51 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 24 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 10 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 | 1 ha | 3 ha | 4 ha |
| 2002 | 1 ha | 1 ha | 2 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | 2 ha | 3 ha |
| 2007 | under 1 ha | under 1 ha | 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 6 ha | 1 ha | 8 ha |
| 2010 | 9 ha | 1 ha | 10 ha |
| 2011 | under 1 ha | under 1 ha | 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | 1 ha | 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Jiazi?
- Farms, pasture and plantationscleared for good42% · 15 ha
- Towns and roadscleared for good22% · 8 ha
- Loggingcan grow back13% · 5 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
- 566 ha
- Forest in 2020
- 785 ha
- Overall change
- +219 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Jiazi grew from about 566 hectares to 785 hectares, a net gain of about 219 hectares (+39%). New forest grew on about 278 hectares, while 59 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 Jiazi
What is the air quality (AQI) in Jiazi right now?
The latest reading for Jiazi shows an AQI of 52 (Moderate), observed Nov 11, 03:00 local time via Open-Meteo / CAMS, corrected with 16 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 Jiazi today?
At AQI 52 (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 Jiazi been like this week?
Over the last 7 days, the CAMS air-quality model put Jiazi's daily AQI at 64 on average, from 43 on Nov 10 to an hourly peak of 103 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Jiazi lost since 2001?
Since 2001, the area within 10 km of Jiazi has lost about 37 hectares of forest (about 51 football pitches): 19% of the forest it had in 2000. Most of it (64%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Jiazi grew from about 566 hectares to 785 hectares, a net gain of about 219 hectares (+39%). New forest grew on about 278 hectares, while 59 hectares were lost.
What is the tree count in Jiazi?
Jiazi has an estimated 43,919 trees across the 8.79 km² of land measured — 20.0% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Jiazi need?
Jiazi needs roughly 21,960 more trees to close a 10-point shortfall against its 30% tree-cover target — about 483.1 t of extra CO₂ absorbed per year once grown.
How are Jiazi'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 Lufeng; the tree count is an estimate derived from that cover.
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