City report · Samut Prakan, Thailand
Samut Prakan Air quality today
Air quality in Samut Prakan currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 62
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 14.9
- tree cover
- 31.2%
- trees in this area
- 76.0K
- more trees needed
- 0
Measured across a 2 km radius around Samut Prakan, Pak Nam, Mueang Samut Prakan District, Samut Prakan, Thailand (12.57 km²), from a satellite image of Aug 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Samut Prakan · AQI 62 (Moderate)
Samut Prakan's tree count comes to 75,964 trees across 9.74 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Samut Prakan today: AQI 62, 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 · South Bangkok Power Plant, 5 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.9
PM10
29.0
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 Samut Prakan's daily AQI at 68 on average, from 47 on Nov 10 to an hourly peak of 113 on Nov 7.
Where Samut Prakan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Samut Prakan: Healthy tree cover
31.2% tree cover against a 30% healthy-neighborhood target, across 9.74 km² of land.
Trees in this area
75,964
Target trees
75,964
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Samut Prakan lost?
Since 2001, the area within 10 km of Samut Prakan has lost about 145 hectares of forest (about 200 football pitches): 9.7% of the forest it had in 2000. Most of it (71%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from February 2017 of a 5 × 5 km area about 4 km west of the city center.
- Forest lost since 2001
- 145 haabout 200 football pitches
- Share of its forest
- 9.7%of what there was in 2000
- Cleared for good
- 103 hadeforestation: turned into farms, mines or towns
The worst year was 2016, when about 27 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 | under 1 ha | under 1 ha | 1 ha |
| 2002 | 1 ha | under 1 ha | 1 ha |
| 2003 | 1 ha | under 1 ha | 2 ha |
| 2004 | 7 ha | 2 ha | 9 ha |
| 2005 | 2 ha | 2 ha | 4 ha |
| 2006 | 5 ha | 2 ha | 8 ha |
| 2007 | 1 ha | 1 ha | 2 ha |
| 2008 | 2 ha | under 1 ha | 3 ha |
| 2009 | 7 ha | 1 ha | 8 ha |
| 2010 | 18 ha | 2 ha | 20 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | 4 ha | under 1 ha | 4 ha |
| 2013 | 3 ha | under 1 ha | 3 ha |
| 2014 | 2 ha | under 1 ha | 2 ha |
| 2015 | under 1 ha | 4 ha | 4 ha |
| 2016 | 8 ha | 20 ha | 27 ha |
| 2017 | 9 ha | 4 ha | 12 ha |
| 2018 | 4 ha | under 1 ha | 4 ha |
| 2019 | 3 ha | under 1 ha | 3 ha |
| 2020 | 2 ha | under 1 ha | 2 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 12 ha | under 1 ha | 12 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 2 ha | 3 ha | 5 ha |
What is causing deforestation around Samut Prakan?
- Towns and roadscleared for good69% · 101 ha
- Loggingcan grow back19% · 27 ha
- Farms, pasture and plantationscleared for good1.4% · 2 ha
Also: 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
- 2,790 ha
- Forest in 2020
- 2,920 ha
- Overall change
- +130 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Samut Prakan grew from about 2,790 hectares to 2,920 hectares, a net gain of about 130 hectares (+4.7%). New forest grew on about 322 hectares, while 192 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 Samut Prakan
Same 2 km radius, same index — so they compare directly.
- Watthana14.8 km
Thailand
- Tree cover
- 23%
- Air quality
- 58
- Bangkok20.2 km
Thailand
- Tree cover
- 12%
- Air quality
- 58
- Latkrabang21.6 km
Thailand
- Tree cover
- 37%
- Air quality
- 58
- Bueng Kum22.3 km
Thailand
- Tree cover
- 33%
- Air quality
- 58
- Ban Samae Dam22.7 km
Thailand
- Tree cover
- 40%
- Air quality
- 61
- Bang Khae23.1 km
Thailand
- Tree cover
- 30%
- Air quality
- 57
Build your own
Compare Samut Prakan with anywhere
This place
Samut Prakan
Use this data
Put Samut Prakan's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Samut Prakan
What is the air quality (AQI) in Samut Prakan right now?
The latest reading for Samut Prakan shows an AQI of 62 (Moderate), measured Nov 12, 00:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is South Bangkok Power Plant, 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 Samut Prakan today?
At AQI 62 (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 Samut Prakan been like this week?
Over the last 7 days, the CAMS air-quality model put Samut Prakan's daily AQI at 68 on average, from 47 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 Samut Prakan lost since 2001?
Since 2001, the area within 10 km of Samut Prakan has lost about 145 hectares of forest (about 200 football pitches): 9.7% of the forest it had in 2000. Most of it (71%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Samut Prakan grew from about 2,790 hectares to 2,920 hectares, a net gain of about 130 hectares (+4.7%). New forest grew on about 322 hectares, while 192 hectares were lost.
What is the tree count in Samut Prakan?
Samut Prakan has an estimated 75,964 trees across the 9.74 km² of land measured — 31.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Samut Prakan need?
Samut Prakan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Samut Prakan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Samut Prakan, 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 Samut Prakan; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address