City report · Bac Ninh, Vietnam
Bắc Ninh Air quality today
Air quality in Bắc Ninh currently reads AQI 118 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 118
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 41.9
- tree cover
- 32.0%
- trees in this area
- 100K
- more trees needed
- 9.4K
Measured across a 2 km radius around Kinh Bac, Bac Ninh, Vietnam (12.57 km²), from a satellite image of Aug 10, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bắc Ninh · AQI 118 (Unhealthy for sensitive groups)
Bắc Ninh's tree count comes to 100,330 trees across 12.54 km² of land, 3 points below the 35% tree-cover level considered healthy for this area, so roughly 9,406 more trees would close the gap.
Air quality detail
Air quality in Bắc Ninh today: AQI 118, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 6 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 6 station cities within 125 km, e.g. Gia Lâm and Duong Hao
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
41.9
PM10
63.3
NO₂
50.6
O₃
6.0
SO₂
39.6
CO
606.0
- 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 Bắc Ninh's daily AQI at 83 on average, from 44 on Nov 9 to an hourly peak of 157 on Nov 10.
Where Bắc Ninh stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bắc Ninh: Below target
32.0% tree cover against a 35% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
100,330
Target trees
109,736
More trees needed
9,406
CO₂ if planted / yr
206.9 t
Deforestation · 2001–2025
How much forest has Bắc Ninh lost?
There was very little forest around Bắc Ninh in 2000, about 62 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 December 2017 of a 5 × 5 km area in the city center.
The worst year was 2023, 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 | 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 | under 1 ha | 1 ha | 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 | 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 | 2 ha | 2 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 | 3 ha | 3 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 Bắc Ninh?
- Loggingcan grow back64% · 9 ha
- Towns and roadscleared for good7.9% · 1 ha
- Unknown causescause unknown28% · 4 ha
Also: farms, pasture and plantations.
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
- 1,210 ha
- Forest in 2020
- 1,910 ha
- Overall change
- +700 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bắc Ninh grew from about 1,210 hectares to 1,910 hectares, a net gain of about 700 hectares (+58%). New forest grew on about 715 hectares, while 15 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 Bắc Ninh
What is the air quality (AQI) in Bắc Ninh right now?
The latest reading for Bắc Ninh shows an AQI of 118 (Unhealthy for sensitive groups), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 6 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Bắc Ninh today?
At AQI 118 (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 Bắc Ninh been like this week?
Over the last 7 days, the CAMS air-quality model put Bắc Ninh's daily AQI at 83 on average, from 44 on Nov 9 to an hourly peak of 157 on Nov 10. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Bắc Ninh lost since 2001?
There was very little forest around Bắc Ninh in 2000, about 62 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 Bắc Ninh grew from about 1,210 hectares to 1,910 hectares, a net gain of about 700 hectares (+58%). New forest grew on about 715 hectares, while 15 hectares were lost.
What is the tree count in Bắc Ninh?
Bắc Ninh has an estimated 100,330 trees across the 12.54 km² of land measured — 32.0% tree cover, 3 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Bắc Ninh need?
Bắc Ninh needs roughly 9,406 more trees to close a 3-point shortfall against its 35% tree-cover target — about 206.9 t of extra CO₂ absorbed per year once grown.
How are Bắc Ninh'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 Kinh Bac; the tree count is an estimate derived from that cover.
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