City report · Bangkok, Thailand
Khlong Sam Wa Air quality today
Air quality in Khlong Sam Wa 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)
- 14.5
- tree cover
- 54.5%
- trees in this area
- 168K
- more trees needed
- 0
Measured across a 2 km radius around Sam Wa Tawan Ok, Khlong Sam Wa, Bangkok 10510, Thailand (12.57 km²), from a satellite image of Jul 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Khlong Sam Wa · AQI 61 (Moderate)
Khlong Sam Wa's tree count comes to 167,964 trees across 12.33 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Khlong Sam Wa today: AQI 61, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Chaloem Phrakiat Rama 9 Park Min buri, Bangkok, 6.5 km away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.5
PM10
35.0
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 Khlong Sam Wa's daily AQI at 61 on average, from 28 on Nov 10 to an hourly peak of 104 on Nov 4.
Where Khlong Sam Wa stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Khlong Sam Wa: Healthy tree cover
54.5% tree cover against a 30% healthy-neighborhood target, across 12.33 km² of land.
Trees in this area
167,964
Target trees
167,964
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Khlong Sam Wa lost?
Since 2001, the area within 10 km of Khlong Sam Wa has lost about 35 hectares of forest (about 48 football pitches): 3.2% of the forest it had in 2000. The biggest cause was towns and roads (32%). About 12 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 35 haabout 48 football pitches
- Share of its forest
- 3.2%of what there was in 2000
- Cleared for good
- 12 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 9 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 | 2 ha | 7 ha | 9 ha |
| 2002 | under 1 ha | 1 ha | 1 ha |
| 2003 | under 1 ha | 2 ha | 3 ha |
| 2004 | 3 ha | 3 ha | 5 ha |
| 2005 | under 1 ha | under 1 ha | 1 ha |
| 2006 | 2 ha | 2 ha | 4 ha |
| 2007 | under 1 ha | 2 ha | 2 ha |
| 2008 | 1 ha | 1 ha | 2 ha |
| 2009 | under 1 ha | 1 ha | 1 ha |
| 2010 | under 1 ha | 2 ha | 2 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 1 ha | 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 Khlong Sam Wa?
- Towns and roadscleared for good32% · 11 ha
- Farms, pasture and plantationscleared for good1.7% · under 1 ha
- Unknown causescause unknown66% · 23 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
- 2,360 ha
- Forest in 2020
- 2,550 ha
- Overall change
- +191 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Khlong Sam Wa grew from about 2,360 hectares to 2,550 hectares, a net gain of about 191 hectares (+8.1%). New forest grew on about 259 hectares, while 69 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 Khlong Sam Wa
Same 2 km radius, same index — so they compare directly.
- Bueng Kum12.0 km
Thailand
- Tree cover
- 33%
- Air quality
- 59
- Nong Chok13.6 km
Thailand
- Tree cover
- 50%
- Air quality
- 54
- Latkrabang16.0 km
Thailand
- Tree cover
- 37%
- Air quality
- 58
- Watthana22.7 km
Thailand
- Tree cover
- 23%
- Air quality
- 59
- Khlong Luang23.6 km
Thailand
- Tree cover
- 35%
- Air quality
- 67
- Mueang Nonthaburi24.0 km
Thailand
- Tree cover
- 31%
- Air quality
- 57
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Frequently asked
Questions about Khlong Sam Wa
What is the air quality (AQI) in Khlong Sam Wa right now?
The latest reading for Khlong Sam Wa shows an AQI of 61 (Moderate), measured Nov 12, 01:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Chaloem Phrakiat Rama 9 Park Min buri, Bangkok, 6.5 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Khlong Sam Wa 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 Khlong Sam Wa been like this week?
Over the last 7 days, the CAMS air-quality model put Khlong Sam Wa's daily AQI at 61 on average, from 28 on Nov 10 to an hourly peak of 104 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Khlong Sam Wa lost since 2001?
Since 2001, the area within 10 km of Khlong Sam Wa has lost about 35 hectares of forest (about 48 football pitches): 3.2% of the forest it had in 2000. The biggest cause was towns and roads (32%). About 12 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Khlong Sam Wa grew from about 2,360 hectares to 2,550 hectares, a net gain of about 191 hectares (+8.1%). New forest grew on about 259 hectares, while 69 hectares were lost.
What is the tree count in Khlong Sam Wa?
Khlong Sam Wa has an estimated 167,964 trees across the 12.33 km² of land measured — 54.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Khlong Sam Wa need?
Khlong Sam Wa has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Khlong Sam Wa's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sam Wa Tawan Ok, 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 Sam Wa Tawan Ok; the tree count is an estimate derived from that cover.
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