City report · Heilongjiang, China
Nehe Air quality today
Air quality in Nehe currently reads AQI 649 (Hazardous): Emergency conditions — avoid outdoor activity.
Air quality right now
AQI 649
Hazardous
- PM2.5, fine particles (µg/m³)
- 408.8
- tree cover
- 9.3%
- trees in this area
- 28.5K
- more trees needed
- 110K
Measured across a 2 km radius around Nehe, Qiqihar, 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.
Nehe · AQI 649 (Hazardous)
Nehe's tree count comes to 28,545 trees across 12.28 km² of land, 36 points below the 45% tree-cover level considered healthy for this area, so roughly 109,575 more trees would close the gap.
Air quality detail
Air quality in Nehe today: AQI 649, Hazardous
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 245 km, e.g. Qiqihar and Daqing
Health signal
Emergency conditions — avoid outdoor activity.
PM2.5
408.8
PM10
122.9
NO₂
80.0
O₃
1.0
SO₂
29.9
CO
1685.0
- Outdoor exercise
- Everyone should avoid all outdoor exertion
- Windows
- Keep them closed and seal gaps
- Mask
- Wear an N95 if you must go out
- Air purifier
- Run one on high
Over the last 7 days, the CAMS air-quality model put Nehe's daily AQI at 84 on average, from 49 on Nov 6 to an hourly peak of 182 on Nov 11.
Where Nehe stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nehe: Critically low
9.3% tree cover against a 45% healthy-neighborhood target, across 12.28 km² of land.
Trees in this area
28,545
Target trees
138,120
More trees needed
109,575
CO₂ if planted / yr
2,411 t
Deforestation · 2001–2025
How much forest has Nehe lost?
There was very little forest around Nehe in 2000, about 95 hectares, and about 19 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 2002, when about 7 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 | 1 ha |
| 2002 | 3 ha | 4 ha | 7 ha |
| 2003 | under 1 ha | 1 ha | 2 ha |
| 2004 | under 1 ha | under 1 ha | 2 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 1 ha | under 1 ha | 2 ha |
| 2007 | under 1 ha | under 1 ha | under 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 | under 1 ha | under 1 ha | under 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 Nehe?
- Farms, pasture and plantationscleared for good25% · 5 ha
- Towns and roadscleared for good23% · 5 ha
- Loggingcan grow back13% · 3 ha
Also: storms, floods and other natural causes, 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
- 131 ha
- Forest in 2020
- 473 ha
- Overall change
- +342 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nehe grew from about 131 hectares to 473 hectares, a net gain of about 342 hectares (+261%). New forest grew on about 344 hectares, while 3 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 Nehe
What is the air quality (AQI) in Nehe right now?
The latest reading for Nehe shows an AQI of 649 (Hazardous), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Emergency conditions — avoid outdoor activity.
Is it safe to exercise outside in Nehe today?
At AQI 649 (Hazardous): everyone should avoid all outdoor exertion. Windows: keep them closed and seal gaps. Masks: wear an N95 if you must go out. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Nehe been like this week?
Over the last 7 days, the CAMS air-quality model put Nehe's daily AQI at 84 on average, from 49 on Nov 6 to an hourly peak of 182 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Nehe lost since 2001?
There was very little forest around Nehe in 2000, about 95 hectares, and about 19 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 Nehe grew from about 131 hectares to 473 hectares, a net gain of about 342 hectares (+261%). New forest grew on about 344 hectares, while 3 hectares were lost.
What is the tree count in Nehe?
Nehe has an estimated 28,545 trees across the 12.28 km² of land measured — 9.3% tree cover, 36 percentage points short of the 45% tree-cover target set for this area.
How many more trees does Nehe need?
Nehe needs roughly 109,575 more trees to close a 36-point shortfall against its 45% tree-cover target — about 2,411 t of extra CO₂ absorbed per year once grown.
How are Nehe'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 Nehe; the tree count is an estimate derived from that cover.
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