City report · North Korea
Sinŭiju Air quality today
Air quality in Sinŭiju currently reads AQI 147 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 147
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 54.2
- tree cover
- 2.6%
- trees in this area
- 7.0K
- more trees needed
- 87.1K
Measured across a 2 km radius around Sinuiju, North Pyongan, North Korea (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sinŭiju · AQI 147 (Unhealthy for sensitive groups)
Sinŭiju's tree count comes to 6,992 trees across 10.76 km² of land, 32 points below the 35% tree-cover level considered healthy for this area, so roughly 87,130 more trees would close the gap.
Air quality detail
Air quality in Sinŭiju today: AQI 147, Unhealthy for sensitive groups
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 · yuanbaoshan, Dandong , Dandong (丹东元宝山), 5.1 km away · median of 3 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
54.2
PM10
83.3
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 Sinŭiju's daily AQI at 74 on average, from 46 on Nov 9 to an hourly peak of 142 on Nov 5.
Where Sinŭiju stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sinŭiju: Critically low
2.6% tree cover against a 35% healthy-neighborhood target, across 10.76 km² of land.
Trees in this area
6,992
Target trees
94,122
More trees needed
87,130
CO₂ if planted / yr
1,917 t
Deforestation · 2001–2025
How much forest has Sinŭiju lost?
Since 2001, the area within 10 km of Sinŭiju has lost about 21 hectares of forest (about 29 football pitches): 2.1% of the forest it had in 2000. Most of it (71%) 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
- 21 haabout 29 football pitches
- Share of its forest
- 2.1%of what there was in 2000
- Cleared for good
- 15 hadeforestation: turned into farms, mines or towns
The worst year was 2020, when about 3 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 | 3 ha | under 1 ha | 3 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 | 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 | 1 ha | under 1 ha | 2 ha |
| 2012 | 1 ha | under 1 ha | 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 | 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 | 1 ha |
| 2020 | 1 ha | 2 ha | 3 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 | 1 ha | 1 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 1 ha | under 1 ha | 1 ha |
What is causing deforestation around Sinŭiju?
- Towns and roadscleared for good64% · 13 ha
- Loggingcan grow back21% · 4 ha
- Mining and energycleared for good8.7% · 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
- 3,440 ha
- Forest in 2020
- 3,630 ha
- Overall change
- +197 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sinŭiju grew from about 3,440 hectares to 3,630 hectares, a net gain of about 197 hectares (+5.7%). New forest grew on about 287 hectares, while 89 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 Sinŭiju
What is the air quality (AQI) in Sinŭiju right now?
The latest reading for Sinŭiju shows an AQI of 147 (Unhealthy for sensitive groups), measured Nov 11, 23:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is yuanbaoshan, Dandong , Dandong (丹东元宝山), 5.1 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Sinŭiju today?
At AQI 147 (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 Sinŭiju been like this week?
Over the last 7 days, the CAMS air-quality model put Sinŭiju's daily AQI at 74 on average, from 46 on Nov 9 to an hourly peak of 142 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Sinŭiju lost since 2001?
Since 2001, the area within 10 km of Sinŭiju has lost about 21 hectares of forest (about 29 football pitches): 2.1% of the forest it had in 2000. Most of it (71%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Sinŭiju grew from about 3,440 hectares to 3,630 hectares, a net gain of about 197 hectares (+5.7%). New forest grew on about 287 hectares, while 89 hectares were lost.
What is the tree count in Sinŭiju?
Sinŭiju has an estimated 6,992 trees across the 10.76 km² of land measured — 2.6% tree cover, 32 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Sinŭiju need?
Sinŭiju needs roughly 87,130 more trees to close a 32-point shortfall against its 35% tree-cover target — about 1,917 t of extra CO₂ absorbed per year once grown.
How are Sinŭiju's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sinuiju, 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 Sinuiju; the tree count is an estimate derived from that cover.
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