City report · Liaoning, China
Dalian Air quality today
Air quality in Dalian currently reads AQI 121 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 121
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 43.8
- tree cover
- 13.5%
- trees in this area
- 42.0K
- more trees needed
- 66.9K
Measured across a 2 km radius around Shahekou District, Dalian, 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.
Dalian · AQI 121 (Unhealthy for sensitive groups)
Dalian's tree count comes to 42,030 trees across 12.46 km² of land, 21 points below the 35% tree-cover level considered healthy for this area, so roughly 66,936 more trees would close the gap.
Air quality detail
Air quality in Dalian today: AQI 121, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Qingniwa Bridge, Dalian (大连青泥洼桥), 2.7 km away · median of 6 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
43.8
PM10
54.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Liaoning Provincial Environmental Monitoring (辽宁省环境保护厅)
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Dalian's daily AQI at 75 on average, from 52 on Nov 7 to an hourly peak of 162 on Nov 4.
Where Dalian stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Dalian: Critically low
13.5% tree cover against a 35% healthy-neighborhood target, across 12.46 km² of land.
Trees in this area
42,030
Target trees
108,966
More trees needed
66,936
CO₂ if planted / yr
1,473 t
Deforestation · 2001–2025
How much forest has Dalian lost?
Since 2001, the area within 10 km of Dalian has lost about 31 hectares of forest (about 44 football pitches): 2.6% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 31 haabout 44 football pitches
- Share of its forest
- 2.6%of what there was in 2000
- Cleared for good
- 29 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 10 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 | under 1 ha | under 1 ha |
| 2005 | 3 ha | under 1 ha | 3 ha |
| 2006 | 1 ha | under 1 ha | 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 2 ha | under 1 ha | 3 ha |
| 2009 | 5 ha | under 1 ha | 5 ha |
| 2010 | 1 ha | under 1 ha | 1 ha |
| 2011 | 2 ha | under 1 ha | 2 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 | 2 ha | under 1 ha | 2 ha |
| 2017 | 8 ha | 1 ha | 10 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 2 ha | under 1 ha | 2 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 Dalian?
- Towns and roadscleared for good94% · 29 ha
- Unknown causescause unknown4.8% · 2 ha
Also: logging.
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
- 3,670 ha
- Forest in 2020
- 3,680 ha
- Overall change
- +14 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Dalian stayed about the same size, at about 3,680 hectares: new forest grew on about 144 hectares, and about 130 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 Dalian
What is the air quality (AQI) in Dalian right now?
The latest reading for Dalian shows an AQI of 121 (Unhealthy for sensitive groups), measured Nov 12, 00:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Qingniwa Bridge, Dalian (大连青泥洼桥), 2.7 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Dalian today?
At AQI 121 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Dalian been like this week?
Over the last 7 days, the CAMS air-quality model put Dalian's daily AQI at 75 on average, from 52 on Nov 7 to an hourly peak of 162 on Nov 4. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Dalian lost since 2001?
Since 2001, the area within 10 km of Dalian has lost about 31 hectares of forest (about 44 football pitches): 2.6% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Dalian stayed about the same size, at about 3,680 hectares: new forest grew on about 144 hectares, and about 130 hectares were lost.
What is the tree count in Dalian?
Dalian has an estimated 42,030 trees across the 12.46 km² of land measured — 13.5% tree cover, 21 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Dalian need?
Dalian needs roughly 66,936 more trees to close a 21-point shortfall against its 35% tree-cover target — about 1,473 t of extra CO₂ absorbed per year once grown.
How are Dalian's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Shahekou 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 Shahekou District; the tree count is an estimate derived from that cover.
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