City report · Heilongjiang, China
Hulan Ergi Air quality today
Air quality in Hulan Ergi currently reads AQI 164 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 164
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 89.5
- tree cover
- 22.4%
- trees in this area
- 69.7K
- more trees needed
- 54.8K
Measured across a 2 km radius around Fularji District, 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.
Hulan Ergi · AQI 164 (Unhealthy)
Hulan Ergi's tree count comes to 69,738 trees across 12.46 km² of land, 18 points below the 40% tree-cover level considered healthy for this area, so roughly 54,794 more trees would close the gap.
Air quality detail
Air quality in Hulan Ergi today: AQI 164, Unhealthy
Main pollutant: PM2.5 · Observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 205 km, e.g. Qiqihar and Daqing
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
89.5
PM10
33.2
NO₂
63.4
O₃
0.0
SO₂
23.1
CO
846.0
- 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 Hulan Ergi's daily AQI at 67 on average, from 55 on Nov 9 to an hourly peak of 103 on Nov 6.
Where Hulan Ergi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hulan Ergi: Critically low
22.4% tree cover against a 40% healthy-neighborhood target, across 12.46 km² of land.
Trees in this area
69,738
Target trees
124,532
More trees needed
54,794
CO₂ if planted / yr
1,205 t
Deforestation · 2001–2025
How much forest has Hulan Ergi lost?
There was very little forest around Hulan Ergi in 2000, about 25 hectares, and about 2 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 August 2017 of a 5 × 5 km area in the city center.
The worst year was 2002, 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 | 2 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 | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 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 Hulan Ergi?
- Farms, pasture and plantationscleared for good35% · under 1 ha
- Towns and roadscleared for good4.3% · under 1 ha
- Unknown causescause unknown57% · 1 ha
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. Images: contains modified Copernicus Sentinel data. How it's measured
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Frequently asked
Questions about Hulan Ergi
What is the air quality (AQI) in Hulan Ergi right now?
The latest reading for Hulan Ergi shows an AQI of 164 (Unhealthy), observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 205 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 Hulan Ergi today?
At AQI 164 (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 Ergi been like this week?
Over the last 7 days, the CAMS air-quality model put Hulan Ergi's daily AQI at 67 on average, from 55 on Nov 9 to an hourly peak of 103 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Hulan Ergi lost since 2001?
There was very little forest around Hulan Ergi in 2000, about 25 hectares, and about 2 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.
What is the tree count in Hulan Ergi?
Hulan Ergi has an estimated 69,738 trees across the 12.46 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 Hulan Ergi need?
Hulan Ergi needs roughly 54,794 more trees to close a 18-point shortfall against its 40% tree-cover target — about 1,205 t of extra CO₂ absorbed per year once grown.
How are Hulan Ergi'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 Fularji District; the tree count is an estimate derived from that cover.
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