City report · Bangkok, Thailand
Bangkok Air quality today
Air quality in Bangkok 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)
- 12.9
- tree cover
- 11.7%
- trees in this area
- 33.3K
- more trees needed
- 52.1K
Measured across a 2 km radius around Sao Chingcha, Phra Nakhon, Bangkok 10200, Thailand (12.57 km²), from a satellite image of Aug 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bangkok · AQI 58 (Moderate)
Bangkok's tree count comes to 33,302 trees across 11.39 km² of land, 18 points below the 30% tree-cover level considered healthy for this area, so roughly 52,087 more trees would close the gap.
Air quality detail
Air quality in Bangkok today: AQI 58, 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 · National Economic and Social Development Council Office, 1.4 km away · median of 32 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
12.9
PM10
39.0
NO₂
41.4
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 Bangkok's daily AQI at 68 on average, from 46 on Nov 10 to an hourly peak of 113 on Nov 7.
Where Bangkok stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bangkok: Critically low
11.7% tree cover against a 30% healthy-neighborhood target, across 11.39 km² of land.
Trees in this area
33,302
Target trees
85,389
More trees needed
52,087
CO₂ if planted / yr
1,146 t
Deforestation · 2001–2025
How much forest has Bangkok lost?
Since 2001, the area within 10 km of Bangkok has lost about 236 hectares of forest (about 330 football pitches): 13% of the forest it had in 2000. Most of it (98%) 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
- 236 haabout 330 football pitches
- Share of its forest
- 13%of what there was in 2000
- Cleared for good
- 232 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 50 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 | under 1 ha |
| 2002 | 1 ha | under 1 ha | 1 ha |
| 2003 | 11 ha | under 1 ha | 12 ha |
| 2004 | 33 ha | under 1 ha | 34 ha |
| 2005 | 16 ha | under 1 ha | 16 ha |
| 2006 | 45 ha | under 1 ha | 45 ha |
| 2007 | 10 ha | under 1 ha | 10 ha |
| 2008 | 10 ha | under 1 ha | 10 ha |
| 2009 | 14 ha | under 1 ha | 14 ha |
| 2010 | 49 ha | 1 ha | 50 ha |
| 2011 | 10 ha | under 1 ha | 11 ha |
| 2012 | 15 ha | under 1 ha | 16 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 2 ha | under 1 ha | 2 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | 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 | 5 ha | under 1 ha | 5 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 3 ha | under 1 ha | 3 ha |
What is causing deforestation around Bangkok?
- Towns and roadscleared for good98% · 231 ha
- Unknown causescause unknown2.1% · 5 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
- 4,000 ha
- Forest in 2020
- 3,720 ha
- Overall change
- −281 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bangkok shrank from about 4,000 hectares to 3,720 hectares, a net loss of about 281 hectares (−7%). New forest grew on about 228 hectares, but 509 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 Bangkok
Same 2 km radius, same index — so they compare directly.
- Bang Khae12.2 km
Thailand
- Tree cover
- 30%
- Air quality
- 57
- Bueng Kum18.5 km
Thailand
- Tree cover
- 33%
- Air quality
- 58
- Samut Prakan20.2 km
Thailand
- Tree cover
- 31%
- Air quality
- 61
- Ban Samae Dam22.0 km
Thailand
- Tree cover
- 40%
- Air quality
- 61
- Sai Mai24.2 km
Thailand
- Tree cover
- 18%
- Air quality
- 58
Also compared:Bangkok vs Chon BuriBangkok vs Hat YaiBangkok vs Lampang
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Frequently asked
Questions about Bangkok
What is the air quality (AQI) in Bangkok right now?
The latest reading for Bangkok shows an AQI of 58 (Moderate), measured Nov 12, 00:00 local time by 32 ground monitoring stations via OpenAQ (the median of their readings; the nearest is National Economic and Social Development Council Office, 1.4 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Bangkok 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 Bangkok been like this week?
Over the last 7 days, the CAMS air-quality model put Bangkok'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 Bangkok lost since 2001?
Since 2001, the area within 10 km of Bangkok has lost about 236 hectares of forest (about 330 football pitches): 13% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Bangkok shrank from about 4,000 hectares to 3,720 hectares, a net loss of about 281 hectares (−7%). New forest grew on about 228 hectares, but 509 hectares were lost.
What is the tree count in Bangkok?
Bangkok has an estimated 33,302 trees across the 11.39 km² of land measured — 11.7% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Bangkok need?
Bangkok needs roughly 52,087 more trees to close a 18-point shortfall against its 30% tree-cover target — about 1,146 t of extra CO₂ absorbed per year once grown.
How are Bangkok's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sao Chingcha, 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 Sao Chingcha; the tree count is an estimate derived from that cover.
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