City report · Guangdong, China
Tanzhou Air quality today
Air quality in Tanzhou currently reads AQI 144 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 144
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 53.0
- tree cover
- 19.7%
- trees in this area
- 61.0K
- more trees needed
- 47.3K
Measured across a 2 km radius around Zhongshan, Guangdong Province, China (12.57 km²), from a satellite image of May 28, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tanzhou · AQI 144 (Unhealthy for sensitive groups)
Tanzhou's tree count comes to 60,961 trees across 12.38 km² of land, 15 points below the 35% tree-cover level considered healthy for this area, so roughly 47,345 more trees would close the gap.
Air quality detail
Air quality in Tanzhou today: AQI 144, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Qiánshān, Zhuhai (珠海前山), 4.1 km away
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
53.0
PM10
89.3
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Guangdong Environmental Protection public network (广东环境保护公众网)
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Tanzhou's daily AQI at 73 on average, from 55 on Nov 9 to an hourly peak of 140 on Nov 8.
Where Tanzhou stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tanzhou: Critically low
19.7% tree cover against a 35% healthy-neighborhood target, across 12.38 km² of land.
Trees in this area
60,961
Target trees
108,306
More trees needed
47,345
CO₂ if planted / yr
1,042 t
Deforestation · 2001–2025
How much forest has Tanzhou lost?
Since 2001, the area within 10 km of Tanzhou has lost about 555 hectares of forest (about 780 football pitches): 8.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 198 hectares (36%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 555 haabout 780 football pitches
- Share of its forest
- 8.5%of what there was in 2000
- Cleared for good
- 198 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 106 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 | 8 ha | 1 ha | 9 ha |
| 2002 | 4 ha | 3 ha | 7 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | 3 ha | 3 ha |
| 2005 | 3 ha | 4 ha | 8 ha |
| 2006 | 8 ha | 9 ha | 17 ha |
| 2007 | 10 ha | 6 ha | 16 ha |
| 2008 | 4 ha | 2 ha | 6 ha |
| 2009 | 8 ha | 88 ha | 96 ha |
| 2010 | 11 ha | 7 ha | 17 ha |
| 2011 | 14 ha | 11 ha | 25 ha |
| 2012 | 3 ha | 11 ha | 14 ha |
| 2013 | 1 ha | 1 ha | 3 ha |
| 2014 | 1 ha | 2 ha | 4 ha |
| 2015 | 6 ha | 2 ha | 8 ha |
| 2016 | 5 ha | 8 ha | 13 ha |
| 2017 | 31 ha | 75 ha | 106 ha |
| 2018 | 12 ha | 15 ha | 27 ha |
| 2019 | 22 ha | 56 ha | 78 ha |
| 2020 | 5 ha | 5 ha | 10 ha |
| 2021 | 10 ha | under 1 ha | 11 ha |
| 2022 | 2 ha | 15 ha | 17 ha |
| 2023 | under 1 ha | 14 ha | 14 ha |
| 2024 | 9 ha | 1 ha | 10 ha |
| 2025 | 19 ha | 17 ha | 36 ha |
What is causing deforestation around Tanzhou?
- Loggingcan grow back61% · 337 ha
- Towns and roadscleared for good33% · 182 ha
- Mining and energycleared for good2.9% · 16 ha
Also: storms, floods and other natural causes, wildfires, 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
- 7,660 ha
- Forest in 2020
- 7,690 ha
- Overall change
- +32 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tanzhou stayed about the same size, at about 7,690 hectares: new forest grew on about 352 hectares, and about 321 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 Tanzhou
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Tanzhou with anywhere
This place
Tanzhou
Use this data
Put Tanzhou's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Tanzhou
What is the air quality (AQI) in Tanzhou right now?
The latest reading for Tanzhou shows an AQI of 144 (Unhealthy for sensitive groups), measured Nov 11, 23:00 local time by the Qiánshān, Zhuhai (珠海前山) ground monitoring station, 4.1 km away, via OpenAQ. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Tanzhou today?
At AQI 144 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Tanzhou been like this week?
Over the last 7 days, the CAMS air-quality model put Tanzhou's daily AQI at 73 on average, from 55 on Nov 9 to an hourly peak of 140 on Nov 8. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Tanzhou lost since 2001?
Since 2001, the area within 10 km of Tanzhou has lost about 555 hectares of forest (about 780 football pitches): 8.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 198 hectares (36%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Tanzhou stayed about the same size, at about 7,690 hectares: new forest grew on about 352 hectares, and about 321 hectares were lost.
What is the tree count in Tanzhou?
Tanzhou has an estimated 60,961 trees across the 12.38 km² of land measured — 19.7% tree cover, 15 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Tanzhou need?
Tanzhou needs roughly 47,345 more trees to close a 15-point shortfall against its 35% tree-cover target — about 1,042 t of extra CO₂ absorbed per year once grown.
How are Tanzhou's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Zhongshan, 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 Zhongshan; 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