City report · Liaoning, China
Huludao Air quality today
Air quality in Huludao currently reads AQI 166 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 166
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 76.8
- tree cover
- 11.3%
- trees in this area
- 35.4K
- more trees needed
- 89.9K
Measured across a 2 km radius around Lianshan District, Huludao, Liaoning, China (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Huludao · AQI 166 (Unhealthy)
Huludao's tree count comes to 35,393 trees across 12.53 km² of land, 29 points below the 40% tree-cover level considered healthy for this area, so roughly 89,893 more trees would close the gap.
Air quality detail
Air quality in Huludao today: AQI 166, 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 · huagong street, Huludao , Huludao (葫芦岛化工街), 300 m away · median of 5 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
76.8
PM10
85.3
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Liaoning Provincial Environmental Monitoring (辽宁省环境保护厅), Liaoning Provincial Environmental Monitoring (辽宁省环境监测实验中心)
- 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 Huludao's daily AQI at 88 on average, from 52 on Nov 6 to an hourly peak of 154 on Nov 5.
Where Huludao stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Huludao: Critically low
11.3% tree cover against a 40% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
35,393
Target trees
125,286
More trees needed
89,893
CO₂ if planted / yr
1,978 t
Deforestation · 2001–2025
How much forest has Huludao lost?
There was very little forest around Huludao in 2000, about 61 hectares, and about 14 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 June 2017 of a 5 × 5 km area in the city center.
The worst year was 2004, when about 5 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 | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 4 ha | 2 ha | 5 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 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 | 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 | 3 ha | 3 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 Huludao?
- Towns and roadscleared for good58% · 8 ha
- Wildfirescan grow back21% · 3 ha
- Loggingcan grow back11% · 2 ha
Also: 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
- 2,090 ha
- Forest in 2020
- 2,390 ha
- Overall change
- +294 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Huludao grew from about 2,090 hectares to 2,390 hectares, a net gain of about 294 hectares (+14%). New forest grew on about 340 hectares, while 45 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 Huludao
What is the air quality (AQI) in Huludao right now?
The latest reading for Huludao shows an AQI of 166 (Unhealthy), measured Nov 11, 23:00 local time by 5 ground monitoring stations via OpenAQ (the median of their readings; the nearest is huagong street, Huludao , Huludao (葫芦岛化工街), 300 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 Huludao today?
At AQI 166 (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 Huludao been like this week?
Over the last 7 days, the CAMS air-quality model put Huludao's daily AQI at 88 on average, from 52 on Nov 6 to an hourly peak of 154 on Nov 5. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Huludao lost since 2001?
There was very little forest around Huludao in 2000, about 61 hectares, and about 14 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 Huludao grew from about 2,090 hectares to 2,390 hectares, a net gain of about 294 hectares (+14%). New forest grew on about 340 hectares, while 45 hectares were lost.
What is the tree count in Huludao?
Huludao has an estimated 35,393 trees across the 12.53 km² of land measured — 11.3% tree cover, 29 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Huludao need?
Huludao needs roughly 89,893 more trees to close a 29-point shortfall against its 40% tree-cover target — about 1,978 t of extra CO₂ absorbed per year once grown.
How are Huludao's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Lianshan 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 Lianshan District; the tree count is an estimate derived from that cover.
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