City report · Heilongjiang, China
Hegang Air quality today
Air quality in Hegang currently reads AQI 158 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 158
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 65.2
- tree cover
- 20.5%
- trees in this area
- 64.2K
- more trees needed
- 61.1K
Measured across a 2 km radius around Xiangyang District, Hegang, Hegang, 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.
Hegang · AQI 158 (Unhealthy)
Hegang's tree count comes to 64,209 trees across 12.53 km² of land, 20 points below the 40% tree-cover level considered healthy for this area, so roughly 61,077 more trees would close the gap.
Air quality detail
Air quality in Hegang today: AQI 158, Unhealthy
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 · Hegang (鹤岗), 600 m away · median of 3 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
65.2
PM10
83.3
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 Hegang's daily AQI at 93 on average, from 49 on Nov 7 to an hourly peak of 177 on Nov 10.
Where Hegang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hegang: Critically low
20.5% tree cover against a 40% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
64,209
Target trees
125,286
More trees needed
61,077
CO₂ if planted / yr
1,344 t
Deforestation · 2001–2025
How much forest has Hegang lost?
Since 2001, the area within 10 km of Hegang has lost about 665 hectares of forest (about 930 football pitches): 10% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 116 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 6 km west of the city center.
- Forest lost since 2001
- 665 haabout 930 football pitches
- Share of its forest
- 10%of what there was in 2000
- Cleared for good
- 116 hadeforestation: turned into farms, mines or towns
The worst year was 2002, when about 102 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 | 3 ha | 40 ha | 43 ha |
| 2002 | 4 ha | 99 ha | 102 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 8 ha | 40 ha | 48 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 5 ha | 54 ha | 59 ha |
| 2007 | 6 ha | 34 ha | 39 ha |
| 2008 | 5 ha | 56 ha | 61 ha |
| 2009 | 14 ha | 43 ha | 57 ha |
| 2010 | 11 ha | 12 ha | 24 ha |
| 2011 | 14 ha | 37 ha | 51 ha |
| 2012 | 3 ha | 17 ha | 20 ha |
| 2013 | under 1 ha | 8 ha | 9 ha |
| 2014 | under 1 ha | 8 ha | 9 ha |
| 2015 | under 1 ha | 26 ha | 26 ha |
| 2016 | 28 ha | 26 ha | 53 ha |
| 2017 | 2 ha | 11 ha | 12 ha |
| 2018 | 4 ha | 9 ha | 14 ha |
| 2019 | 5 ha | 22 ha | 27 ha |
| 2020 | 2 ha | 3 ha | 5 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | 2 ha | 2 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Hegang?
- Loggingcan grow back74% · 491 ha
- Farms, pasture and plantationscleared for good7.6% · 51 ha
- Towns and roadscleared for good6.8% · 45 ha
Also: storms, floods and other natural causes, wildfires, 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
- 8,410 ha
- Forest in 2020
- 8,190 ha
- Overall change
- −222 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hegang shrank from about 8,410 hectares to 8,190 hectares, a net loss of about 222 hectares (−2.6%). New forest grew on about 92 hectares, but 313 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 Hegang
Same 2 km radius, same index — so they compare directly.
- Jiamusi61.2 km
China
- Tree cover
- 20%
- Air quality
- 173
- Lianhe80.3 km
China
- Tree cover
- 33%
- Air quality
- 93
- Shuangyashan98.2 km
China
- Tree cover
- 22%
- Air quality
- 166
- Yichun, Heilongjiang114.1 km
China
- Tree cover
- 41%
- Air quality
- 66
- 119.9 km
- Tree cover
- 34%
- Air quality
- 166
- Tieli174.5 km
China
- Tree cover
- 9%
- Air quality
- 152
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Frequently asked
Questions about Hegang
What is the air quality (AQI) in Hegang right now?
The latest reading for Hegang shows an AQI of 158 (Unhealthy), measured Nov 11, 23:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Hegang (鹤岗), 600 m away). The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Hegang today?
At AQI 158 (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 Hegang been like this week?
Over the last 7 days, the CAMS air-quality model put Hegang's daily AQI at 93 on average, from 49 on Nov 7 to an hourly peak of 177 on Nov 10. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Hegang lost since 2001?
Since 2001, the area within 10 km of Hegang has lost about 665 hectares of forest (about 930 football pitches): 10% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 116 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hegang shrank from about 8,410 hectares to 8,190 hectares, a net loss of about 222 hectares (−2.6%). New forest grew on about 92 hectares, but 313 hectares were lost.
What is the tree count in Hegang?
Hegang has an estimated 64,209 trees across the 12.53 km² of land measured — 20.5% tree cover, 20 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Hegang need?
Hegang needs roughly 61,077 more trees to close a 20-point shortfall against its 40% tree-cover target — about 1,344 t of extra CO₂ absorbed per year once grown.
How are Hegang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Xiangyang 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 Xiangyang District; the tree count is an estimate derived from that cover.
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