City report · Thailand
Nakhon Pathom Air quality today
Air quality in Nakhon Pathom currently reads AQI 70 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 70
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 19.4
- tree cover
- 38.0%
- trees in this area
- 119K
- more trees needed
- 0
Measured across a 2 km radius around Phra Prathom Chedi Sub-district, Mueang Nakhon Pathom District, Nakhon Pathom 73000, Thailand (12.57 km²), from a satellite image of Jul 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Nakhon Pathom · AQI 70 (Moderate)
Nakhon Pathom's tree count comes to 118,664 trees across 12.49 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Nakhon Pathom today: AQI 70, 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 · NASA GSFC Rutgers Calib. N17, 400 m away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
19.4
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Clarity, TK
- 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 Nakhon Pathom's daily AQI at 70 on average, from 42 on Nov 10 to an hourly peak of 128 on Nov 5.
Where Nakhon Pathom stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nakhon Pathom: Healthy tree cover
38.0% tree cover against a 30% healthy-neighborhood target, across 12.49 km² of land.
Trees in this area
118,664
Target trees
118,664
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Nakhon Pathom lost?
Since 2001, the area within 10 km of Nakhon Pathom has lost about 82 hectares of forest (about 110 football pitches): 6.8% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 82 haabout 110 football pitches
- Share of its forest
- 6.8%of what there was in 2000
- Cleared for good
- 61 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 14 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 | under 1 ha | 2 ha |
| 2002 | under 1 ha | under 1 ha | 1 ha |
| 2003 | 3 ha | under 1 ha | 4 ha |
| 2004 | 2 ha | 2 ha | 3 ha |
| 2005 | 3 ha | 2 ha | 5 ha |
| 2006 | 5 ha | 3 ha | 8 ha |
| 2007 | 3 ha | 1 ha | 4 ha |
| 2008 | 3 ha | 1 ha | 5 ha |
| 2009 | 4 ha | 1 ha | 5 ha |
| 2010 | 11 ha | 4 ha | 14 ha |
| 2011 | 2 ha | 2 ha | 3 ha |
| 2012 | under 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 | 1 ha | under 1 ha | 1 ha |
| 2017 | 7 ha | under 1 ha | 7 ha |
| 2018 | 1 ha | under 1 ha | 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 1 ha | under 1 ha | 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | 1 ha | under 1 ha | 1 ha |
| 2023 | 4 ha | under 1 ha | 4 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 4 ha | 1 ha | 5 ha |
What is causing deforestation around Nakhon Pathom?
- Farms, pasture and plantationscleared for good44% · 36 ha
- Towns and roadscleared for good30% · 25 ha
- Unknown causescause unknown26% · 21 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
- 4,110 ha
- Forest in 2020
- 4,210 ha
- Overall change
- +103 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nakhon Pathom grew from about 4,110 hectares to 4,210 hectares, a net gain of about 103 hectares (+2.5%). New forest grew on about 257 hectares, while 153 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 Nakhon Pathom
Same 2 km radius, same index — so they compare directly.
- Ban I Chang20.1 km
Thailand
- Tree cover
- 61%
- Air quality
- 67
- Bang Khae41.7 km
Thailand
- Tree cover
- 30%
- Air quality
- 57
- Ban Samae Dam45.0 km
Thailand
- Tree cover
- 40%
- Air quality
- 61
- Bangkok49.9 km
Thailand
- Tree cover
- 12%
- Air quality
- 58
- Mueang Nonthaburi51.0 km
Thailand
- Tree cover
- 31%
- Air quality
- 56
- Phra Pradaeng55.8 km
Thailand
- Tree cover
- 25%
- Air quality
- 57
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Frequently asked
Questions about Nakhon Pathom
What is the air quality (AQI) in Nakhon Pathom right now?
The latest reading for Nakhon Pathom shows an AQI of 70 (Moderate), measured Nov 12, 00:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is NASA GSFC Rutgers Calib. N17, 400 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Nakhon Pathom today?
At AQI 70 (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 Nakhon Pathom been like this week?
Over the last 7 days, the CAMS air-quality model put Nakhon Pathom's daily AQI at 70 on average, from 42 on Nov 10 to an hourly peak of 128 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Nakhon Pathom lost since 2001?
Since 2001, the area within 10 km of Nakhon Pathom has lost about 82 hectares of forest (about 110 football pitches): 6.8% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Nakhon Pathom grew from about 4,110 hectares to 4,210 hectares, a net gain of about 103 hectares (+2.5%). New forest grew on about 257 hectares, while 153 hectares were lost.
What is the tree count in Nakhon Pathom?
Nakhon Pathom has an estimated 118,664 trees across the 12.49 km² of land measured — 38.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Nakhon Pathom need?
Nakhon Pathom has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Nakhon Pathom's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Phra Prathom Chedi Sub-district, 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 Phra Prathom Chedi Sub-district; the tree count is an estimate derived from that cover.
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