City report · Dong Thap, Vietnam
Sa Dec Air quality today
Air quality in Sa Dec currently reads AQI 58 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 58
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 14.5
- tree cover
- 42.9%
- trees in this area
- 132K
- more trees needed
- 0
Measured across a 2 km radius around Sa Dec, 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.
Sa Dec · AQI 58 (Moderate)
Sa Dec's tree count comes to 132,483 trees across 12.36 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Sa Dec today: AQI 58, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 125 km, e.g. Can Giuoc and Ho Chi Minh City
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.5
PM10
15.1
NO₂
5.2
O₃
132.0
SO₂
9.6
CO
243.0
- 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 Sa Dec's daily AQI at 75 on average, from 55 on Nov 11 to an hourly peak of 124 on Nov 7.
Where Sa Dec stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sa Dec: Healthy tree cover
42.9% tree cover against a 30% healthy-neighborhood target, across 12.36 km² of land.
Trees in this area
132,483
Target trees
132,483
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Sa Dec lost?
Since 2001, the area within 10 km of Sa Dec has lost about 22 hectares of forest (about 31 football pitches): under 1% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (21%). About 6 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 22 haabout 31 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 6 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 6 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 | 1 ha | 2 ha | 3 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 | 2 ha | 3 ha |
| 2006 | under 1 ha | 1 ha | 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 2 ha | 4 ha | 6 ha |
| 2010 | under 1 ha | 3 ha | 3 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | 2 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 Sa Dec?
- Farms, pasture and plantationscleared for good21% · 5 ha
- Towns and roadscleared for good7.1% · 2 ha
- Unknown causescause unknown71% · 16 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
- 3,020 ha
- Forest in 2020
- 3,350 ha
- Overall change
- +335 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sa Dec grew from about 3,020 hectares to 3,350 hectares, a net gain of about 335 hectares (+11%). New forest grew on about 388 hectares, while 54 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 Sa Dec
What is the air quality (AQI) in Sa Dec right now?
The latest reading for Sa Dec shows an AQI of 58 (Moderate), observed Nov 11, 15:00 local time via Open-Meteo / CAMS, corrected with 4 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 Sa Dec today?
At AQI 58 (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 Sa Dec been like this week?
Over the last 7 days, the CAMS air-quality model put Sa Dec's daily AQI at 75 on average, from 55 on Nov 11 to an hourly peak of 124 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Sa Dec lost since 2001?
Since 2001, the area within 10 km of Sa Dec has lost about 22 hectares of forest (about 31 football pitches): under 1% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (21%). About 6 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Sa Dec grew from about 3,020 hectares to 3,350 hectares, a net gain of about 335 hectares (+11%). New forest grew on about 388 hectares, while 54 hectares were lost.
What is the tree count in Sa Dec?
Sa Dec has an estimated 132,483 trees across the 12.36 km² of land measured — 42.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Sa Dec need?
Sa Dec has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Sa Dec'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 Sa Dec; the tree count is an estimate derived from that cover.
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