City report · Hà Tĩnh Province, Vietnam
Hà Tĩnh Air quality today
Air quality in Hà Tĩnh currently reads AQI 86 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 86
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 29.4
- tree cover
- 19.7%
- trees in this area
- 60.2K
- more trees needed
- 31.5K
Measured across a 2 km radius around Thanh Sen, Ha Tinh, Vietnam (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hà Tĩnh · AQI 86 (Moderate)
Hà Tĩnh's tree count comes to 60,156 trees across 12.22 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 31,452 more trees would close the gap.
Air quality detail
Air quality in Hà Tĩnh today: AQI 86, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 245 km, e.g. Song Tri and Thakhek
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.4
PM10
16.2
NO₂
10.2
O₃
63.0
SO₂
15.7
CO
305.0
- 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 Hà Tĩnh's daily AQI at 51 on average, from 48 on Nov 6 to an hourly peak of 70 on Nov 5.
Where Hà Tĩnh stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hà Tĩnh: Below target
19.7% tree cover against a 30% healthy-neighborhood target, across 12.22 km² of land.
Trees in this area
60,156
Target trees
91,608
More trees needed
31,452
CO₂ if planted / yr
691.9 t
Deforestation · 2001–2025
How much forest has Hà Tĩnh lost?
Since 2001, the area within 10 km of Hà Tĩnh has lost about 271 hectares of forest (about 380 football pitches): 16% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 35 hectares (13%) 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 southwest of the city center.
- Forest lost since 2001
- 271 haabout 380 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 35 hadeforestation: turned into farms, mines or towns
The worst year was 2015, when about 24 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 | 4 ha | 4 ha | 8 ha |
| 2002 | 2 ha | 2 ha | 4 ha |
| 2003 | under 1 ha | 1 ha | 2 ha |
| 2004 | 1 ha | 1 ha | 2 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 1 ha | 2 ha | 3 ha |
| 2007 | 1 ha | 6 ha | 7 ha |
| 2008 | 2 ha | 4 ha | 6 ha |
| 2009 | 7 ha | 10 ha | 17 ha |
| 2010 | under 1 ha | 2 ha | 3 ha |
| 2011 | under 1 ha | 17 ha | 17 ha |
| 2012 | 1 ha | 13 ha | 14 ha |
| 2013 | under 1 ha | 17 ha | 17 ha |
| 2014 | 1 ha | 20 ha | 21 ha |
| 2015 | 5 ha | 19 ha | 24 ha |
| 2016 | 2 ha | 19 ha | 21 ha |
| 2017 | 1 ha | 23 ha | 24 ha |
| 2018 | under 1 ha | 15 ha | 15 ha |
| 2019 | under 1 ha | 15 ha | 15 ha |
| 2020 | under 1 ha | 10 ha | 10 ha |
| 2021 | under 1 ha | 9 ha | 10 ha |
| 2022 | under 1 ha | 11 ha | 11 ha |
| 2023 | under 1 ha | 8 ha | 9 ha |
| 2024 | 1 ha | 2 ha | 3 ha |
| 2025 | under 1 ha | 6 ha | 6 ha |
What is causing deforestation around Hà Tĩnh?
- Loggingcan grow back80% · 216 ha
- Farms, pasture and plantationscleared for good7% · 19 ha
- Towns and roadscleared for good5.6% · 15 ha
Also: mining and energy, 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
- 4,030 ha
- Forest in 2020
- 4,200 ha
- Overall change
- +174 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hà Tĩnh grew from about 4,030 hectares to 4,200 hectares, a net gain of about 174 hectares (+4.3%). New forest grew on about 355 hectares, while 181 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 Hà Tĩnh
What is the air quality (AQI) in Hà Tĩnh right now?
The latest reading for Hà Tĩnh shows an AQI of 86 (Moderate), observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 245 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 Hà Tĩnh today?
At AQI 86 (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 Hà Tĩnh been like this week?
Over the last 7 days, the CAMS air-quality model put Hà Tĩnh's daily AQI at 51 on average, from 48 on Nov 6 to an hourly peak of 70 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 Hà Tĩnh lost since 2001?
Since 2001, the area within 10 km of Hà Tĩnh has lost about 271 hectares of forest (about 380 football pitches): 16% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 35 hectares (13%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hà Tĩnh grew from about 4,030 hectares to 4,200 hectares, a net gain of about 174 hectares (+4.3%). New forest grew on about 355 hectares, while 181 hectares were lost.
What is the tree count in Hà Tĩnh?
Hà Tĩnh has an estimated 60,156 trees across the 12.22 km² of land measured — 19.7% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Hà Tĩnh need?
Hà Tĩnh needs roughly 31,452 more trees to close a 10-point shortfall against its 30% tree-cover target — about 691.9 t of extra CO₂ absorbed per year once grown.
How are Hà Tĩnh'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 Thanh Sen; the tree count is an estimate derived from that cover.
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