City report · Heilongjiang, China
Shuangyashan Air quality today
Air quality in Shuangyashan currently reads AQI 169 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 169
Unhealthy
- PM2.5, fine particles (µg/m³)
- 80.7
- tree cover
- 22.4%
- trees in this area
- 70.2K
- more trees needed
- 55.1K
Measured across a 2 km radius around Jianshan District, Shuangyashan, Heilongjiang, China (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Shuangyashan · AQI 169 (Unhealthy)
Shuangyashan's tree count comes to 70,161 trees across 12.53 km² of land, 18 points below the 40% tree-cover level considered healthy for this area, so roughly 55,126 more trees would close the gap.
Air quality detail
Air quality in Shuangyashan today: AQI 169, 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 · shuāng hé cūn, Shuangyashan (双鸭山双合村), 3.2 km away · median of 3 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
80.7
PM10
117.6
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Helongjiang Environmental Protection Agency (黑龙江省空气质量实时发布平台)
- 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 Shuangyashan's daily AQI at 87 on average, from 54 on Nov 7 to an hourly peak of 162 on Nov 11.
Where Shuangyashan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Shuangyashan: Critically low
22.4% tree cover against a 40% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
70,161
Target trees
125,287
More trees needed
55,126
CO₂ if planted / yr
1,213 t
Deforestation · 2001–2025
How much forest has Shuangyashan lost?
Since 2001, the area within 10 km of Shuangyashan has lost about 127 hectares of forest (about 180 football pitches): 2.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 50 hectares (39%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 5 km west of the city center.
- Forest lost since 2001
- 127 haabout 180 football pitches
- Share of its forest
- 2.9%of what there was in 2000
- Cleared for good
- 50 hadeforestation: turned into farms, mines or towns
The worst year was 2019, when about 32 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 | 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 | 2 ha | 2 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 1 ha | 3 ha | 4 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | 2 ha | 2 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | 1 ha | 2 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 2 ha | 2 ha | 4 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 6 ha | under 1 ha | 6 ha |
| 2016 | 1 ha | under 1 ha | 2 ha |
| 2017 | 6 ha | under 1 ha | 6 ha |
| 2018 | 8 ha | 3 ha | 11 ha |
| 2019 | 7 ha | 25 ha | 32 ha |
| 2020 | 5 ha | 19 ha | 24 ha |
| 2021 | 6 ha | 15 ha | 21 ha |
| 2022 | under 1 ha | 2 ha | 2 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | 2 ha | under 1 ha | 3 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Shuangyashan?
- Loggingcan grow back58% · 73 ha
- Towns and roadscleared for good21% · 27 ha
- Farms, pasture and plantationscleared for good9.7% · 12 ha
Also: mining and energy, 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
- 5,680 ha
- Forest in 2020
- 6,930 ha
- Overall change
- +1,250 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Shuangyashan grew from about 5,680 hectares to 6,930 hectares, a net gain of about 1,250 hectares (+22%). New forest grew on about 1,590 hectares, while 338 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 Shuangyashan
What is the air quality (AQI) in Shuangyashan right now?
The latest reading for Shuangyashan shows an AQI of 169 (Unhealthy), measured Nov 11, 22:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is shuāng hé cūn, Shuangyashan (双鸭山双合村), 3.2 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 Shuangyashan today?
At AQI 169 (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 Shuangyashan been like this week?
Over the last 7 days, the CAMS air-quality model put Shuangyashan's daily AQI at 87 on average, from 54 on Nov 7 to an hourly peak of 162 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Shuangyashan lost since 2001?
Since 2001, the area within 10 km of Shuangyashan has lost about 127 hectares of forest (about 180 football pitches): 2.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 50 hectares (39%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Shuangyashan grew from about 5,680 hectares to 6,930 hectares, a net gain of about 1,250 hectares (+22%). New forest grew on about 1,590 hectares, while 338 hectares were lost.
What is the tree count in Shuangyashan?
Shuangyashan has an estimated 70,161 trees across the 12.53 km² of land measured — 22.4% tree cover, 18 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Shuangyashan need?
Shuangyashan needs roughly 55,126 more trees to close a 18-point shortfall against its 40% tree-cover target — about 1,213 t of extra CO₂ absorbed per year once grown.
How are Shuangyashan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jianshan 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 Jianshan District; the tree count is an estimate derived from that cover.
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