City report · Heilongjiang, China
Hulan Air quality today
Air quality in Hulan currently reads AQI 161 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 161
Unhealthy
- PM2.5, fine particles (µg/m³)
- 69.1
- tree cover
- 21.7%
- trees in this area
- 68.0K
- more trees needed
- 57.3K
Measured across a 2 km radius around Hulan District, Harbin, Heilongjiang, China (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hulan · AQI 161 (Unhealthy)
Hulan's tree count comes to 67,968 trees across 12.53 km² of land, 18 points below the 40% tree-cover level considered healthy for this area, so roughly 57,319 more trees would close the gap.
Air quality detail
Air quality in Hulan today: AQI 161, 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 · Songbei Commercial University, Haerbin (哈尔滨松北商大), 8.6 km away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
69.1
PM10
95.4
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 Hulan's daily AQI at 97 on average, from 66 on Nov 6 to an hourly peak of 220 on Nov 4.
Where Hulan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hulan: Critically low
21.7% tree cover against a 40% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
67,968
Target trees
125,287
More trees needed
57,319
CO₂ if planted / yr
1,261 t
Deforestation · 2001–2025
How much forest has Hulan lost?
There was very little forest around Hulan in 2000, about 39 hectares, and about 8 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from September 2017 of a 5 × 5 km area in the city center.
The worst year was 2004, when about 2 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 | 1 ha | 2 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 | 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 1 ha | under 1 ha | 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 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 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 Hulan?
- Towns and roadscleared for good66% · 6 ha
- Storms, floods and other natural causescan grow back20% · 2 ha
- Unknown causescause unknown13% · 1 ha
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
- 158 ha
- Forest in 2020
- 404 ha
- Overall change
- +246 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hulan grew from about 158 hectares to 404 hectares, a net gain of about 246 hectares (+156%). New forest grew on about 248 hectares, while 2 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 Hulan
What is the air quality (AQI) in Hulan right now?
The latest reading for Hulan shows an AQI of 161 (Unhealthy), measured Nov 11, 23:00 local time by the Songbei Commercial University, Haerbin (哈尔滨松北商大) ground monitoring station, 8.6 km away, via OpenAQ. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Hulan today?
At AQI 161 (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 Hulan been like this week?
Over the last 7 days, the CAMS air-quality model put Hulan's daily AQI at 97 on average, from 66 on Nov 6 to an hourly peak of 220 on Nov 4. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Hulan lost since 2001?
There was very little forest around Hulan in 2000, about 39 hectares, and about 8 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here. Comparing satellite maps from 2000 and 2020, the forest around Hulan grew from about 158 hectares to 404 hectares, a net gain of about 246 hectares (+156%). New forest grew on about 248 hectares, while 2 hectares were lost.
What is the tree count in Hulan?
Hulan has an estimated 67,968 trees across the 12.53 km² of land measured — 21.7% tree cover, 18 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Hulan need?
Hulan needs roughly 57,319 more trees to close a 18-point shortfall against its 40% tree-cover target — about 1,261 t of extra CO₂ absorbed per year once grown.
How are Hulan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Hulan 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 Hulan District; the tree count is an estimate derived from that cover.
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