City report · Hà Tĩnh Province, Vietnam
Kỳ Anh Air quality today
Air quality in Kỳ Anh currently reads AQI 36 (Good): Air quality is satisfactory for everyone.
AQI 36
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.5
- tree cover
- 48.6%
- trees in this area
- 153K
- more trees needed
- 0
Measured across a 2 km radius around Song Tri, Ha Tinh, Vietnam (12.57 km²), from a satellite image of Sep 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kỳ Anh · AQI 36 (Good)
Kỳ Anh's tree count comes to 152,529 trees across 12.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Kỳ Anh today: AQI 36, Good
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Hà Tĩnh/Trạm Kỳ Phương, Vietnam, 11.9 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.5
PM10
27.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Vietnam Center For Environmental Monitoring Portal (cổng thông tin quan trắc môi trường)
- 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 Kỳ Anh's daily AQI at 47 on average, from 41 on Nov 6 to an hourly peak of 67 on Nov 10.
Where Kỳ Anh stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kỳ Anh: Healthy tree cover
48.6% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
152,529
Target trees
152,529
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Kỳ Anh lost?
Since 2001, the area within 10 km of Kỳ Anh has lost about 5,890 hectares of forest (about 8,300 football pitches): 53% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 121 hectares (2.1%) was deforestation: forest cleared for good for farms, mines or towns.

2017: satellite photo from May 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 5,890 haabout 8,300 football pitches
- Share of its forest
- 53%of what there was in 2000
- Cleared for good
- 121 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 157 hectares a year in 2021–2025, down from 638 hectares a year in 2016–2020. The worst year was 2017, when about 927 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 | 6 ha | 55 ha | 61 ha |
| 2002 | 1 ha | 21 ha | 22 ha |
| 2003 | under 1 ha | 18 ha | 18 ha |
| 2004 | under 1 ha | 37 ha | 37 ha |
| 2005 | 5 ha | 66 ha | 71 ha |
| 2006 | under 1 ha | 20 ha | 20 ha |
| 2007 | 1 ha | 122 ha | 123 ha |
| 2008 | 8 ha | 150 ha | 158 ha |
| 2009 | 5 ha | 36 ha | 41 ha |
| 2010 | 2 ha | 25 ha | 27 ha |
| 2011 | 6 ha | 113 ha | 119 ha |
| 2012 | 11 ha | 289 ha | 300 ha |
| 2013 | 9 ha | 282 ha | 291 ha |
| 2014 | 2 ha | 278 ha | 280 ha |
| 2015 | under 1 ha | 351 ha | 352 ha |
| 2016 | 9 ha | 765 ha | 774 ha |
| 2017 | 16 ha | 911 ha | 927 ha |
| 2018 | 10 ha | 916 ha | 926 ha |
| 2019 | 2 ha | 218 ha | 220 ha |
| 2020 | 4 ha | 337 ha | 341 ha |
| 2021 | 7 ha | 260 ha | 267 ha |
| 2022 | 4 ha | 177 ha | 180 ha |
| 2023 | 3 ha | 156 ha | 159 ha |
| 2024 | 8 ha | 97 ha | 105 ha |
| 2025 | 1 ha | 73 ha | 74 ha |
What is causing deforestation around Kỳ Anh?
- Loggingcan grow back98% · 5,760 ha
Also: towns and roads, farms, pasture and plantations, mining and energy, shifting farming, 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
- 14,700 ha
- Forest in 2020
- 14,400 ha
- Overall change
- −321 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kỳ Anh shrank from about 14,700 hectares to 14,400 hectares, a net loss of about 321 hectares (−2.2%). New forest grew on about 942 hectares, but 1,260 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 Kỳ Anh
What is the air quality (AQI) in Kỳ Anh right now?
The latest reading for Kỳ Anh shows an AQI of 36 (Good), measured Nov 12, 01:00 local time by the Hà Tĩnh/Trạm Kỳ Phương, Vietnam ground monitoring station, 11.9 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Kỳ Anh today?
At AQI 36 (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 Kỳ Anh been like this week?
Over the last 7 days, the CAMS air-quality model put Kỳ Anh's daily AQI at 47 on average, from 41 on Nov 6 to an hourly peak of 67 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Kỳ Anh lost since 2001?
Since 2001, the area within 10 km of Kỳ Anh has lost about 5,890 hectares of forest (about 8,300 football pitches): 53% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 121 hectares (2.1%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 157 hectares a year in 2021–2025, down from 638 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Kỳ Anh shrank from about 14,700 hectares to 14,400 hectares, a net loss of about 321 hectares (−2.2%). New forest grew on about 942 hectares, but 1,260 hectares were lost.
What is the tree count in Kỳ Anh?
Kỳ Anh has an estimated 152,529 trees across the 12.56 km² of land measured — 48.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Kỳ Anh need?
Kỳ Anh has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Kỳ Anh's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Song Tri, 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 Song Tri; the tree count is an estimate derived from that cover.
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