City report · Dong Thap, Vietnam
Hồng Ngự Air quality today
Air quality in Hồng Ngự currently reads AQI 17 (Good): Air quality is satisfactory for everyone.
AQI 17
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.2
- tree cover
- 14.2%
- trees in this area
- 38.0K
- more trees needed
- 42.2K
Measured across a 2 km radius around An Binh, Dong Thap, Vietnam (12.57 km²), from a satellite image of Jun 13, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hồng Ngự · AQI 17 (Good)
Hồng Ngự's tree count comes to 37,964 trees across 10.7 km² of land, 16 points below the 30% tree-cover level considered healthy for this area, so roughly 42,241 more trees would close the gap.
Air quality detail
Air quality in Hồng Ngự today: AQI 17, Good
Main pollutant: PM2.5 · Observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 145 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 145 km, e.g. Phnom Penh and Ho Chi Minh City
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.2
PM10
6.6
NO₂
2.2
O₃
92.0
SO₂
2.3
CO
217.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Hồng Ngự's daily AQI at 66 on average, from 42 on Nov 10 to an hourly peak of 117 on Nov 6.
Where Hồng Ngự stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hồng Ngự: Critically low
14.2% tree cover against a 30% healthy-neighborhood target, across 10.7 km² of land.
Trees in this area
37,964
Target trees
80,205
More trees needed
42,241
CO₂ if planted / yr
929.3 t
Deforestation · 2001–2025
How much forest has Hồng Ngự lost?
Since 2001, the area within 10 km of Hồng Ngự has lost about 71 hectares of forest (about 100 football pitches): 1.7% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 71 haabout 100 football pitches
- Share of its forest
- 1.7%of what there was in 2000
- Cleared for good
- 48 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 16 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 | 7 ha | 6 ha | 12 ha |
| 2002 | 2 ha | 2 ha | 3 ha |
| 2003 | 3 ha | 1 ha | 4 ha |
| 2004 | under 1 ha | 1 ha | 2 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 2 ha | 1 ha | 3 ha |
| 2007 | 4 ha | under 1 ha | 5 ha |
| 2008 | 7 ha | 2 ha | 10 ha |
| 2009 | 3 ha | 3 ha | 6 ha |
| 2010 | 12 ha | 4 ha | 16 ha |
| 2011 | 4 ha | 1 ha | 5 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 | 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 Hồng Ngự?
- Farms, pasture and plantationscleared for good53% · 38 ha
- Towns and roadscleared for good15% · 11 ha
- Unknown causescause unknown32% · 23 ha
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
- 318 ha
- Forest in 2020
- 364 ha
- Overall change
- +46 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hồng Ngự grew from about 318 hectares to 364 hectares, a net gain of about 46 hectares (+14%). New forest grew on about 56 hectares, while 9 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 Hồng Ngự
What is the air quality (AQI) in Hồng Ngự right now?
The latest reading for Hồng Ngự shows an AQI of 17 (Good), observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 145 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Hồng Ngự today?
At AQI 17 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Hồng Ngự been like this week?
Over the last 7 days, the CAMS air-quality model put Hồng Ngự's daily AQI at 66 on average, from 42 on Nov 10 to an hourly peak of 117 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 Hồng Ngự lost since 2001?
Since 2001, the area within 10 km of Hồng Ngự has lost about 71 hectares of forest (about 100 football pitches): 1.7% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Hồng Ngự grew from about 318 hectares to 364 hectares, a net gain of about 46 hectares (+14%). New forest grew on about 56 hectares, while 9 hectares were lost.
What is the tree count in Hồng Ngự?
Hồng Ngự has an estimated 37,964 trees across the 10.7 km² of land measured — 14.2% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Hồng Ngự need?
Hồng Ngự needs roughly 42,241 more trees to close a 16-point shortfall against its 30% tree-cover target — about 929.3 t of extra CO₂ absorbed per year once grown.
How are Hồng Ngự'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 An Binh; the tree count is an estimate derived from that cover.
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