City report · Guangdong, China
Chenghua Air quality today
Air quality in Chenghua currently reads AQI 58 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 58
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.1
- tree cover
- 12.6%
- trees in this area
- 36.1K
- more trees needed
- 49.8K
Measured across a 2 km radius around Chenghai District, Shantou, 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.
Chenghua · AQI 58 (Moderate)
Chenghua's tree count comes to 36,061 trees across 11.45 km² of land, 17 points below the 30% tree-cover level considered healthy for this area, so roughly 49,799 more trees would close the gap.
Air quality detail
Air quality in Chenghua today: AQI 58, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Chénghǎizi, Shantou (汕头澄海子站), 2.2 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.1
PM10
25.9
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project
- 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 Chenghua's daily AQI at 77 on average, from 51 on Nov 10 to an hourly peak of 155 on Nov 5.
Where Chenghua stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chenghua: Critically low
12.6% tree cover against a 30% healthy-neighborhood target, across 11.45 km² of land.
Trees in this area
36,061
Target trees
85,860
More trees needed
49,799
CO₂ if planted / yr
1,096 t
Deforestation · 2001–2025
How much forest has Chenghua lost?
Since 2001, the area within 10 km of Chenghua has lost about 8 hectares of forest (about 11 football pitches): 3.7% of the forest it had in 2000. Most of it (78%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from January 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 8 haabout 11 football pitches
- Share of its forest
- 3.7%of what there was in 2000
- Cleared for good
- 6 hadeforestation: turned into farms, mines or towns
The worst year was 2006, when about 1 hectare 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 | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 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 | 1 ha | under 1 ha | 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | 1 ha |
| 2013 | under 1 ha | under 1 ha | under 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 | under 1 ha | under 1 ha | under 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 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Chenghua?
- Towns and roadscleared for good77% · 6 ha
- Farms, pasture and plantationscleared for good1.3% · under 1 ha
- Unknown causescause unknown23% · 2 ha
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
- 739 ha
- Forest in 2020
- 853 ha
- Overall change
- +114 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chenghua grew from about 739 hectares to 853 hectares, a net gain of about 114 hectares (+15%). New forest grew on about 136 hectares, while 22 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 Chenghua
What is the air quality (AQI) in Chenghua right now?
The latest reading for Chenghua shows an AQI of 58 (Moderate), measured Nov 12, 00:00 local time by the Chénghǎizi, Shantou (汕头澄海子站) ground monitoring station, 2.2 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 Chenghua today?
At AQI 58 (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 Chenghua been like this week?
Over the last 7 days, the CAMS air-quality model put Chenghua's daily AQI at 77 on average, from 51 on Nov 10 to an hourly peak of 155 on Nov 5. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Chenghua lost since 2001?
Since 2001, the area within 10 km of Chenghua has lost about 8 hectares of forest (about 11 football pitches): 3.7% of the forest it had in 2000. Most of it (78%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Chenghua grew from about 739 hectares to 853 hectares, a net gain of about 114 hectares (+15%). New forest grew on about 136 hectares, while 22 hectares were lost.
What is the tree count in Chenghua?
Chenghua has an estimated 36,061 trees across the 11.45 km² of land measured — 12.6% tree cover, 17 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Chenghua need?
Chenghua needs roughly 49,799 more trees to close a 17-point shortfall against its 30% tree-cover target — about 1,096 t of extra CO₂ absorbed per year once grown.
How are Chenghua's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Chenghai District, 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 Chenghai District; the tree count is an estimate derived from that cover.
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