City report · Heilongjiang, China
Suifenhe Air quality today
Air quality in Suifenhe currently reads AQI 172 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 172
Unhealthy
- PM2.5, fine particles (µg/m³)
- 92.7
- tree cover
- 25.6%
- trees in this area
- 79.6K
- more trees needed
- 44.8K
Measured across a 2 km radius around Suifenhe, Mudanjiang, 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.
Suifenhe · AQI 172 (Unhealthy)
Suifenhe's tree count comes to 79,621 trees across 12.44 km² of land, 14 points below the 40% tree-cover level considered healthy for this area, so roughly 44,787 more trees would close the gap.
Air quality detail
Air quality in Suifenhe today: AQI 172, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 245 km, e.g. Mudanjiang and Mudanjiang
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
92.7
PM10
45.8
NO₂
30.1
O₃
17.0
SO₂
12.0
CO
510.0
- 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 Suifenhe's daily AQI at 64 on average, from 50 on Nov 8 to an hourly peak of 95 on Nov 11.
Where Suifenhe stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Suifenhe: Below target
25.6% tree cover against a 40% healthy-neighborhood target, across 12.44 km² of land.
Trees in this area
79,621
Target trees
124,408
More trees needed
44,787
CO₂ if planted / yr
985.3 t
Deforestation · 2001–2025
How much forest has Suifenhe lost?
Since 2001, the area within 10 km of Suifenhe has lost about 161 hectares of forest (about 230 football pitches): under 1% of the forest it had in 2000. The biggest cause was towns and roads (40%). About 68 hectares (43%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 4 km south of the city center.
- Forest lost since 2001
- 161 haabout 230 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 68 hadeforestation: turned into farms, mines or towns
The worst year was 2018, 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 | 1 ha | 2 ha |
| 2003 | 2 ha | 1 ha | 3 ha |
| 2004 | 5 ha | 6 ha | 11 ha |
| 2005 | under 1 ha | 1 ha | 1 ha |
| 2006 | 9 ha | 3 ha | 12 ha |
| 2007 | 4 ha | under 1 ha | 4 ha |
| 2008 | under 1 ha | 1 ha | 2 ha |
| 2009 | under 1 ha | under 1 ha | 1 ha |
| 2010 | 3 ha | under 1 ha | 4 ha |
| 2011 | 1 ha | under 1 ha | 2 ha |
| 2012 | 4 ha | 2 ha | 6 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | under 1 ha | 1 ha | 2 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 2 ha | under 1 ha | 2 ha |
| 2017 | 3 ha | under 1 ha | 4 ha |
| 2018 | 17 ha | 55 ha | 71 ha |
| 2019 | 4 ha | 7 ha | 11 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 1 ha | 6 ha | 7 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 6 ha | under 1 ha | 7 ha |
| 2025 | 2 ha | 4 ha | 6 ha |
What is causing deforestation around Suifenhe?
- Towns and roadscleared for good40% · 64 ha
- Loggingcan grow back26% · 41 ha
- Storms, floods and other natural causescan grow back15% · 24 ha
Also: wildfires, mining and energy, farms, pasture and plantations, 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
- 23,300 ha
- Forest in 2020
- 23,700 ha
- Overall change
- +347 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Suifenhe stayed about the same size, at about 23,700 hectares: new forest grew on about 391 hectares, and about 43 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 Suifenhe
What is the air quality (AQI) in Suifenhe right now?
The latest reading for Suifenhe shows an AQI of 172 (Unhealthy), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Suifenhe today?
At AQI 172 (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 Suifenhe been like this week?
Over the last 7 days, the CAMS air-quality model put Suifenhe's daily AQI at 64 on average, from 50 on Nov 8 to an hourly peak of 95 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Suifenhe lost since 2001?
Since 2001, the area within 10 km of Suifenhe has lost about 161 hectares of forest (about 230 football pitches): under 1% of the forest it had in 2000. The biggest cause was towns and roads (40%). About 68 hectares (43%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Suifenhe stayed about the same size, at about 23,700 hectares: new forest grew on about 391 hectares, and about 43 hectares were lost.
What is the tree count in Suifenhe?
Suifenhe has an estimated 79,621 trees across the 12.44 km² of land measured — 25.6% tree cover, 14 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Suifenhe need?
Suifenhe needs roughly 44,787 more trees to close a 14-point shortfall against its 40% tree-cover target — about 985.3 t of extra CO₂ absorbed per year once grown.
How are Suifenhe's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Suifenhe; the tree count is an estimate derived from that cover.
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