City report · Sichuan, China
Guang’an Air quality today
Air quality in Guang’an currently reads AQI 153 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 153
Unhealthy
- PM2.5, fine particles (µg/m³)
- 58.4
- tree cover
- 36.8%
- trees in this area
- 103K
- more trees needed
- 8.9K
Measured across a 2 km radius around Guang'An, Sichuan, China (12.57 km²), from a satellite image of Sep 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Guang’an · AQI 153 (Unhealthy)
Guang’an's tree count comes to 102,778 trees across 11.17 km² of land, 3 points below the 40% tree-cover level considered healthy for this area, so roughly 8,937 more trees would close the gap.
Air quality detail
Air quality in Guang’an today: AQI 153, Unhealthy
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 · běichén xiǎoxué, Guangan (广安北辰小学), 1.4 km away · median of 2 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
58.4
PM10
70.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Sichuan Province Environmental Protection Agency (四川省环保重点城市环境空气质量实时监测结果)
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Guang’an's daily AQI at 114 on average, from 68 on Nov 8 to an hourly peak of 192 on Nov 5.
Where Guang’an stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Guang’an: Below target
36.8% tree cover against a 40% healthy-neighborhood target, across 11.17 km² of land.
Trees in this area
102,778
Target trees
111,715
More trees needed
8,937
CO₂ if planted / yr
196.6 t
Deforestation · 2001–2025
How much forest has Guang’an lost?
Since 2001, the area within 10 km of Guang’an has lost about 77 hectares of forest (about 110 football pitches): 1.6% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 6 km south of the city center.
- Forest lost since 2001
- 77 haabout 110 football pitches
- Share of its forest
- 1.6%of what there was in 2000
- Cleared for good
- 66 hadeforestation: turned into farms, mines or towns
The worst year was 2022, when about 19 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 | 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 | under 1 ha | under 1 ha | under 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 | 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 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 | 2 ha | under 1 ha | 2 ha |
| 2017 | 2 ha | under 1 ha | 2 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 9 ha | 1 ha | 10 ha |
| 2021 | 9 ha | under 1 ha | 9 ha |
| 2022 | 18 ha | 1 ha | 19 ha |
| 2023 | 11 ha | 2 ha | 13 ha |
| 2024 | 12 ha | under 1 ha | 12 ha |
| 2025 | 2 ha | 3 ha | 6 ha |
What is causing deforestation around Guang’an?
- Towns and roadscleared for good64% · 49 ha
- Mining and energycleared for good19% · 14 ha
- Farms, pasture and plantationscleared for good3.5% · 3 ha
Also: logging, 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
- 17,000 ha
- Forest in 2020
- 17,000 ha
- Overall change
- −49 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Guang’an stayed about the same size, at about 17,000 hectares: new forest grew on about 207 hectares, and about 256 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 Guang’an
What is the air quality (AQI) in Guang’an right now?
The latest reading for Guang’an shows an AQI of 153 (Unhealthy), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is běichén xiǎoxué, Guangan (广安北辰小学), 1.4 km away). The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Guang’an today?
At AQI 153 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Guang’an been like this week?
Over the last 7 days, the CAMS air-quality model put Guang’an's daily AQI at 114 on average, from 68 on Nov 8 to an hourly peak of 192 on Nov 5. On 5 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Guang’an lost since 2001?
Since 2001, the area within 10 km of Guang’an has lost about 77 hectares of forest (about 110 football pitches): 1.6% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Guang’an stayed about the same size, at about 17,000 hectares: new forest grew on about 207 hectares, and about 256 hectares were lost.
What is the tree count in Guang’an?
Guang’an has an estimated 102,778 trees across the 11.17 km² of land measured — 36.8% tree cover, 3 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Guang’an need?
Guang’an needs roughly 8,937 more trees to close a 3-point shortfall against its 40% tree-cover target — about 196.6 t of extra CO₂ absorbed per year once grown.
How are Guang’an's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Guang'An, 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 Guang'An; the tree count is an estimate derived from that cover.
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