City report · Guangdong, China
Longgang Air quality today
Air quality in Longgang currently reads AQI 90 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 90
Moderate
- PM2.5, fine particles (µg/m³)
- 29.9
- tree cover
- 27.0%
- trees in this area
- 84.8K
- more trees needed
- 9.4K
Measured across a 2 km radius around Longgang, Shenzhen, Guangdong Province, China (12.57 km²), from a satellite image of Aug 11, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Longgang · AQI 90 (Moderate)
Longgang's tree count comes to 84,823 trees across 12.57 km², 3 points below the 30% tree-cover level considered healthy for this area, so roughly 9,425 more trees would close the gap.
Air quality detail
Air quality in Longgang today: AQI 90, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · 龙岗子站, Shenzhen (龙岗区 龙岗街道), 900 m away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.9
PM10
57.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Shenzhen Environment Network (深圳人居环境网), Guangdong Environmental Protection public network (广东环境保护公众网)
- 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 Longgang's daily AQI at 74 on average, from 47 on Nov 10 to an hourly peak of 203 on Nov 6.
Where Longgang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Longgang: Below target
27.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
84,823
Target trees
94,248
More trees needed
9,425
CO₂ if planted / yr
207.3 t
Deforestation · 2001–2025
How much forest has Longgang lost?
Since 2001, the area within 10 km of Longgang has lost about 1,230 hectares of forest (about 1,700 football pitches): 22% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from November 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 1,230 haabout 1,700 football pitches
- Share of its forest
- 22%of what there was in 2000
- Cleared for good
- 913 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 25 hectares a year in 2021–2025, down from 54 hectares a year in 2016–2020. The worst year was 2007, when about 155 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 | 16 ha | 3 ha | 19 ha |
| 2002 | 23 ha | 5 ha | 28 ha |
| 2003 | 12 ha | 5 ha | 17 ha |
| 2004 | 52 ha | 7 ha | 58 ha |
| 2005 | 32 ha | 5 ha | 37 ha |
| 2006 | 20 ha | 2 ha | 22 ha |
| 2007 | 105 ha | 50 ha | 155 ha |
| 2008 | 88 ha | 32 ha | 119 ha |
| 2009 | 49 ha | 23 ha | 72 ha |
| 2010 | 47 ha | 24 ha | 70 ha |
| 2011 | 66 ha | 13 ha | 80 ha |
| 2012 | 63 ha | 6 ha | 69 ha |
| 2013 | 14 ha | 6 ha | 19 ha |
| 2014 | 30 ha | 25 ha | 55 ha |
| 2015 | 7 ha | 10 ha | 17 ha |
| 2016 | 45 ha | 25 ha | 70 ha |
| 2017 | 34 ha | 6 ha | 40 ha |
| 2018 | 14 ha | 9 ha | 23 ha |
| 2019 | 75 ha | 8 ha | 83 ha |
| 2020 | 47 ha | 9 ha | 56 ha |
| 2021 | 5 ha | 12 ha | 17 ha |
| 2022 | 13 ha | 7 ha | 20 ha |
| 2023 | 8 ha | 6 ha | 14 ha |
| 2024 | 11 ha | 21 ha | 32 ha |
| 2025 | 40 ha | 4 ha | 43 ha |
What is causing deforestation around Longgang?
- Towns and roadscleared for good53% · 658 ha
- Loggingcan grow back23% · 280 ha
- Mining and energycleared for good19% · 231 ha
Also: storms, floods and other natural causes, 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
- 10,200 ha
- Forest in 2020
- 10,000 ha
- Overall change
- −153 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Longgang stayed about the same size, at about 10,000 hectares: new forest grew on about 904 hectares, and about 1,060 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 Longgang
What is the air quality (AQI) in Longgang right now?
The latest reading for Longgang shows an AQI of 90 (Moderate), measured Nov 11, 22:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 龙岗子站, Shenzhen (龙岗区 龙岗街道), 900 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Longgang today?
At AQI 90 (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 Longgang been like this week?
Over the last 7 days, the CAMS air-quality model put Longgang's daily AQI at 74 on average, from 47 on Nov 10 to an hourly peak of 203 on Nov 6. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Longgang lost since 2001?
Since 2001, the area within 10 km of Longgang has lost about 1,230 hectares of forest (about 1,700 football pitches): 22% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 25 hectares a year in 2021–2025, down from 54 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Longgang stayed about the same size, at about 10,000 hectares: new forest grew on about 904 hectares, and about 1,060 hectares were lost.
What is the tree count in Longgang?
Longgang has an estimated 84,823 trees across the 12.57 km² measured — 27.0% tree cover, 3 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Longgang need?
Longgang needs roughly 9,425 more trees to close a 3-point shortfall against its 30% tree-cover target — about 207.3 t of extra CO₂ absorbed per year once grown.
How are Longgang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Longgang, 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 Longgang; the tree count is an estimate derived from that cover.
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