City report · Hưng Yên Province, Vietnam
Hưng Yên Air quality today
Air quality in Hưng Yên currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 62
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 16.5
- tree cover
- 45.8%
- trees in this area
- 133K
- more trees needed
- 0
Measured across a 2 km radius around Pho Hien, Hung Yen, Vietnam (12.57 km²), from a satellite image of Sep 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hưng Yên · AQI 62 (Moderate)
Hưng Yên's tree count comes to 132,950 trees across 11.61 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Hưng Yên today: AQI 62, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 125 km, e.g. Duong Hao and Gia Lâm
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
16.5
PM10
27.9
NO₂
11.3
O₃
134.0
SO₂
35.1
CO
380.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Hưng Yên's daily AQI at 76 on average, from 52 on Nov 9 to an hourly peak of 124 on Nov 5.
Where Hưng Yên stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hưng Yên: Healthy tree cover
45.8% tree cover against a 30% healthy-neighborhood target, across 11.61 km² of land.
Trees in this area
132,950
Target trees
132,950
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Hưng Yên lost?
Since 2001, the area within 10 km of Hưng Yên has lost about 8 hectares of forest (about 11 football pitches): 6% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (17%). About 2 hectares (27%) was deforestation: forest cleared for good for farms, mines or towns.

2017: satellite photo from December 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 8 haabout 11 football pitches
- Share of its forest
- 6%of what there was in 2000
- Cleared for good
- 2 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 2 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 | under 1 ha | under 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 | 2 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 | 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 Hưng Yên?
- Farms, pasture and plantationscleared for good17% · 1 ha
- Towns and roadscleared for good8.5% · under 1 ha
- Unknown causescause unknown73% · 6 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
- 1,670 ha
- Forest in 2020
- 2,520 ha
- Overall change
- +852 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hưng Yên grew from about 1,670 hectares to 2,520 hectares, a net gain of about 852 hectares (+51%). New forest grew on about 854 hectares, while 3 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 Hưng Yên
What is the air quality (AQI) in Hưng Yên right now?
The latest reading for Hưng Yên shows an AQI of 62 (Moderate), observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Hưng Yên today?
At AQI 62 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Hưng Yên been like this week?
Over the last 7 days, the CAMS air-quality model put Hưng Yên's daily AQI at 76 on average, from 52 on Nov 9 to an hourly peak of 124 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 Hưng Yên lost since 2001?
Since 2001, the area within 10 km of Hưng Yên has lost about 8 hectares of forest (about 11 football pitches): 6% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (17%). About 2 hectares (27%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hưng Yên grew from about 1,670 hectares to 2,520 hectares, a net gain of about 852 hectares (+51%). New forest grew on about 854 hectares, while 3 hectares were lost.
What is the tree count in Hưng Yên?
Hưng Yên has an estimated 132,950 trees across the 11.61 km² of land measured — 45.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hưng Yên need?
Hưng Yên has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Hưng Yên'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 Pho Hien; the tree count is an estimate derived from that cover.
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