City report · Chongqing, China
Beibei Air quality today
Air quality in Beibei currently reads AQI 151 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 151
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 55.5
- tree cover
- 51.5%
- trees in this area
- 150K
- more trees needed
- 0
Measured across a 2 km radius around Beibei District, Chongqing, China (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Beibei · AQI 151 (Unhealthy)
Beibei's tree count comes to 150,143 trees across 11.66 km² of land, already at or above the 40% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Beibei today: AQI 151, Unhealthy
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Tiansheng, Chongqing (重庆天生), 1.2 km away · median of 2 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
55.5
PM10
72.2
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
- 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 Beibei's daily AQI at 115 on average, from 68 on Nov 8 to an hourly peak of 191 on Nov 5.
Where Beibei stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Beibei: Healthy tree cover
51.5% tree cover against a 40% healthy-neighborhood target, across 11.66 km² of land.
Trees in this area
150,143
Target trees
150,143
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Beibei lost?
Since 2001, the area within 10 km of Beibei has lost about 441 hectares of forest (about 620 football pitches): 5.1% of the forest it had in 2000. The biggest cause was logging (39%), after which forest can grow back. About 150 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 441 haabout 620 football pitches
- Share of its forest
- 5.1%of what there was in 2000
- Cleared for good
- 150 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 70 hectares a year in 2021–2025, up from 9 hectares a year in 2016–2020. The worst year was 2023, when about 257 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 | 1 ha | 1 ha |
| 2003 | 1 ha | under 1 ha | 2 ha |
| 2004 | 2 ha | under 1 ha | 2 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 | 1 ha | under 1 ha | 2 ha |
| 2009 | 11 ha | under 1 ha | 11 ha |
| 2010 | 5 ha | under 1 ha | 6 ha |
| 2011 | 3 ha | under 1 ha | 3 ha |
| 2012 | 1 ha | under 1 ha | 1 ha |
| 2013 | 4 ha | under 1 ha | 4 ha |
| 2014 | 9 ha | under 1 ha | 10 ha |
| 2015 | 4 ha | under 1 ha | 5 ha |
| 2016 | under 1 ha | under 1 ha | 2 ha |
| 2017 | 27 ha | 2 ha | 29 ha |
| 2018 | 4 ha | under 1 ha | 4 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 5 ha | 2 ha | 7 ha |
| 2021 | 8 ha | under 1 ha | 8 ha |
| 2022 | 11 ha | 20 ha | 32 ha |
| 2023 | 10 ha | 247 ha | 257 ha |
| 2024 | 19 ha | 12 ha | 31 ha |
| 2025 | 20 ha | 2 ha | 22 ha |
What is causing deforestation around Beibei?
- Loggingcan grow back39% · 173 ha
- Towns and roadscleared for good32% · 140 ha
- Wildfirescan grow back25% · 111 ha
Also: farms, pasture and plantations, mining and energy, 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
- 20,400 ha
- Forest in 2020
- 20,400 ha
- Overall change
- +41 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Beibei stayed about the same size, at about 20,400 hectares: new forest grew on about 290 hectares, and about 249 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 Beibei
What is the air quality (AQI) in Beibei right now?
The latest reading for Beibei shows an AQI of 151 (Unhealthy), measured Nov 12, 01:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Tiansheng, Chongqing (重庆天生), 1.2 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 Beibei today?
At AQI 151 (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 Beibei been like this week?
Over the last 7 days, the CAMS air-quality model put Beibei's daily AQI at 115 on average, from 68 on Nov 8 to an hourly peak of 191 on Nov 5. On 5 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Beibei lost since 2001?
Since 2001, the area within 10 km of Beibei has lost about 441 hectares of forest (about 620 football pitches): 5.1% of the forest it had in 2000. The biggest cause was logging (39%), after which forest can grow back. About 150 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 70 hectares a year in 2021–2025, up from 9 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Beibei stayed about the same size, at about 20,400 hectares: new forest grew on about 290 hectares, and about 249 hectares were lost.
What is the tree count in Beibei?
Beibei has an estimated 150,143 trees across the 11.66 km² of land measured — 51.5% tree cover, already past the 40% tree-cover target set for this area.
How many more trees does Beibei need?
Beibei has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Beibei's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Beibei 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 Beibei District; the tree count is an estimate derived from that cover.
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