City report · Chongqing, China
Huixing Air quality today
Air quality in Huixing currently reads AQI 132 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 132
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 48.1
- tree cover
- 37.6%
- trees in this area
- 118K
- more trees needed
- 0
Measured across a 2 km radius around Yubei District, Chongqing, China (12.57 km²), from a satellite image of Aug 27, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Huixing · AQI 132 (Unhealthy for sensitive groups)
Huixing's tree count comes to 117,533 trees across 12.51 km² of land, already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Huixing today: AQI 132, 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 · huí xìng, Chongqing (重庆回兴), 800 m away · median of 6 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
48.1
PM10
75.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Chongqing Environmental Protection Bureau (重庆市主城区空气质量)
- 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 Huixing's daily AQI at 108 on average, from 79 on Nov 8 to an hourly peak of 181 on Nov 5.
Where Huixing stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Huixing: Healthy tree cover
37.6% tree cover against a 35% healthy-neighborhood target, across 12.51 km² of land.
Trees in this area
117,533
Target trees
117,533
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Huixing lost?
Since 2001, the area within 10 km of Huixing has lost about 356 hectares of forest (about 500 football pitches): 8% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 356 haabout 500 football pitches
- Share of its forest
- 8%of what there was in 2000
- Cleared for good
- 353 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 71 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 | 3 ha | under 1 ha | 3 ha |
| 2004 | 4 ha | under 1 ha | 4 ha |
| 2005 | 6 ha | under 1 ha | 6 ha |
| 2006 | 8 ha | under 1 ha | 8 ha |
| 2007 | 3 ha | under 1 ha | 3 ha |
| 2008 | 6 ha | under 1 ha | 6 ha |
| 2009 | 11 ha | under 1 ha | 11 ha |
| 2010 | 11 ha | under 1 ha | 12 ha |
| 2011 | 10 ha | under 1 ha | 10 ha |
| 2012 | 7 ha | under 1 ha | 7 ha |
| 2013 | 17 ha | under 1 ha | 17 ha |
| 2014 | 18 ha | under 1 ha | 18 ha |
| 2015 | 13 ha | under 1 ha | 13 ha |
| 2016 | 68 ha | under 1 ha | 68 ha |
| 2017 | 71 ha | under 1 ha | 71 ha |
| 2018 | 8 ha | under 1 ha | 8 ha |
| 2019 | 11 ha | under 1 ha | 11 ha |
| 2020 | 4 ha | under 1 ha | 4 ha |
| 2021 | 36 ha | under 1 ha | 36 ha |
| 2022 | 7 ha | under 1 ha | 7 ha |
| 2023 | 6 ha | under 1 ha | 6 ha |
| 2024 | 6 ha | under 1 ha | 6 ha |
| 2025 | 19 ha | under 1 ha | 19 ha |
What is causing deforestation around Huixing?
- Towns and roadscleared for good87% · 311 ha
- Mining and energycleared for good12% · 42 ha
Also: farms, pasture and plantations, 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
- 10,400 ha
- Forest in 2020
- 9,110 ha
- Overall change
- −1,260 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Huixing shrank from about 10,400 hectares to 9,110 hectares, a net loss of about 1,260 hectares (−12%). New forest grew on about 176 hectares, but 1,440 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 Huixing
What is the air quality (AQI) in Huixing right now?
The latest reading for Huixing shows an AQI of 132 (Unhealthy for sensitive groups), measured Nov 11, 23:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is huí xìng, Chongqing (重庆回兴), 800 m away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Huixing today?
At AQI 132 (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 Huixing been like this week?
Over the last 7 days, the CAMS air-quality model put Huixing's daily AQI at 108 on average, from 79 on Nov 8 to an hourly peak of 181 on Nov 5. On 5 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Huixing lost since 2001?
Since 2001, the area within 10 km of Huixing has lost about 356 hectares of forest (about 500 football pitches): 8% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Huixing shrank from about 10,400 hectares to 9,110 hectares, a net loss of about 1,260 hectares (−12%). New forest grew on about 176 hectares, but 1,440 hectares were lost.
What is the tree count in Huixing?
Huixing has an estimated 117,533 trees across the 12.51 km² of land measured — 37.6% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Huixing need?
Huixing has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Huixing's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Yubei 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 Yubei District; the tree count is an estimate derived from that cover.
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