City report · Bangkok, Thailand
Ban Samae Dam Air quality today
Air quality in Ban Samae Dam currently reads AQI 61 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 61
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 14.4
- tree cover
- 39.5%
- trees in this area
- 92.8K
- more trees needed
- 0
Measured across a 2 km radius around Samae Dam, Bang Khun Thian, Bangkok 10150, Thailand (12.57 km²), from a satellite image of Aug 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ban Samae Dam · AQI 61 (Moderate)
Ban Samae Dam's tree count comes to 92,821 trees across 9.4 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ban Samae Dam today: AQI 61, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Bang Bon 5 Market, 5.7 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.4
PM10
41.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · Air4Thai, Pollution Control Department, Thailand · Air4Thai
- 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 Ban Samae Dam's daily AQI at 68 on average, from 46 on Nov 10 to an hourly peak of 113 on Nov 7.
Where Ban Samae Dam stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ban Samae Dam: Healthy tree cover
39.5% tree cover against a 30% healthy-neighborhood target, across 9.4 km² of land.
Trees in this area
92,821
Target trees
92,821
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ban Samae Dam lost?
Since 2001, the area within 10 km of Ban Samae Dam has lost about 256 hectares of forest (about 360 football pitches): 13% of the forest it had in 2000. Most of it (95%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 256 haabout 360 football pitches
- Share of its forest
- 13%of what there was in 2000
- Cleared for good
- 242 hadeforestation: turned into farms, mines or towns
The worst year was 2006, when about 61 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 | under 1 ha | 7 ha |
| 2002 | 10 ha | under 1 ha | 10 ha |
| 2003 | 15 ha | 2 ha | 16 ha |
| 2004 | 20 ha | 2 ha | 22 ha |
| 2005 | 20 ha | under 1 ha | 21 ha |
| 2006 | 59 ha | 2 ha | 61 ha |
| 2007 | 17 ha | under 1 ha | 18 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 24 ha | 2 ha | 26 ha |
| 2010 | 18 ha | 2 ha | 20 ha |
| 2011 | 8 ha | under 1 ha | 9 ha |
| 2012 | 15 ha | under 1 ha | 15 ha |
| 2013 | 1 ha | under 1 ha | 1 ha |
| 2014 | 1 ha | under 1 ha | 1 ha |
| 2015 | 1 ha | under 1 ha | 1 ha |
| 2016 | 3 ha | under 1 ha | 3 ha |
| 2017 | 4 ha | under 1 ha | 4 ha |
| 2018 | 1 ha | under 1 ha | 1 ha |
| 2019 | 3 ha | under 1 ha | 3 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 1 ha | under 1 ha | 1 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 3 ha | under 1 ha | 3 ha |
| 2024 | 4 ha | under 1 ha | 4 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Ban Samae Dam?
- Towns and roadscleared for good94% · 241 ha
- Unknown causescause unknown5.4% · 14 ha
Also: farms, pasture and plantations.
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
- 1,820 ha
- Forest in 2020
- 1,720 ha
- Overall change
- −104 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ban Samae Dam shrank from about 1,820 hectares to 1,720 hectares, a net loss of about 104 hectares (−5.7%). New forest grew on about 213 hectares, but 317 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
In the same region
Measured cities near Ban Samae Dam
Same 2 km radius, same index — so they compare directly.
- Phra Pradaeng17.6 km
Thailand
- Tree cover
- 25%
- Air quality
- 58
- Bangkok22.0 km
Thailand
- Tree cover
- 12%
- Air quality
- 58
- Samut Prakan22.7 km
Thailand
- Tree cover
- 31%
- Air quality
- 62
- Watthana26.5 km
Thailand
- Tree cover
- 23%
- Air quality
- 59
- Mueang Nonthaburi33.1 km
Thailand
- Tree cover
- 31%
- Air quality
- 57
- Bueng Kum37.5 km
Thailand
- Tree cover
- 33%
- Air quality
- 59
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Frequently asked
Questions about Ban Samae Dam
What is the air quality (AQI) in Ban Samae Dam right now?
The latest reading for Ban Samae Dam shows an AQI of 61 (Moderate), measured Nov 12, 00:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Bang Bon 5 Market, 5.7 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Ban Samae Dam today?
At AQI 61 (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 Ban Samae Dam been like this week?
Over the last 7 days, the CAMS air-quality model put Ban Samae Dam's daily AQI at 68 on average, from 46 on Nov 10 to an hourly peak of 113 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 Ban Samae Dam lost since 2001?
Since 2001, the area within 10 km of Ban Samae Dam has lost about 256 hectares of forest (about 360 football pitches): 13% of the forest it had in 2000. Most of it (95%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Ban Samae Dam shrank from about 1,820 hectares to 1,720 hectares, a net loss of about 104 hectares (−5.7%). New forest grew on about 213 hectares, but 317 hectares were lost.
What is the tree count in Ban Samae Dam?
Ban Samae Dam has an estimated 92,821 trees across the 9.4 km² of land measured — 39.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ban Samae Dam need?
Ban Samae Dam has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ban Samae Dam's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Samae Dam, 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 Samae Dam; the tree count is an estimate derived from that cover.
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