City report · Bangkok, Thailand
Nong Chok Air quality today
Air quality in Nong Chok currently reads AQI 54 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 54
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.5
- tree cover
- 50.3%
- trees in this area
- 158K
- more trees needed
- 0
Measured across a 2 km radius around Krathum Rai, Nong Chok, Bangkok 10530, Thailand (12.57 km²), from a satellite image of Aug 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Nong Chok · AQI 54 (Moderate)
Nong Chok's tree count comes to 158,022 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Nong Chok today: AQI 54, 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 · Nong Chok District Office, Bangkok, 100 m away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.5
PM10
33.0
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 Nong Chok's daily AQI at 61 on average, from 28 on Nov 10 to an hourly peak of 104 on Nov 4.
Where Nong Chok stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nong Chok: Healthy tree cover
50.3% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
158,022
Target trees
158,022
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Nong Chok lost?
Since 2001, the area within 10 km of Nong Chok has lost about 16 hectares of forest (about 22 football pitches): 2.2% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (17%). About 5 hectares (32%) 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
- 16 haabout 22 football pitches
- Share of its forest
- 2.2%of what there was in 2000
- Cleared for good
- 5 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 4 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 | 3 ha | 4 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | 1 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | 1 ha | 2 ha |
| 2010 | 1 ha | under 1 ha | 2 ha |
| 2011 | under 1 ha | under 1 ha | under 1 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 | 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 Nong Chok?
- Farms, pasture and plantationscleared for good17% · 3 ha
- Towns and roadscleared for good15% · 2 ha
- Unknown causescause unknown67% · 11 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
- 1,640 ha
- Forest in 2020
- 1,750 ha
- Overall change
- +114 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nong Chok grew from about 1,640 hectares to 1,750 hectares, a net gain of about 114 hectares (+7%). New forest grew on about 160 hectares, while 46 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 Nong Chok
Same 2 km radius, same index — so they compare directly.
- Khlong Sam Wa13.6 km
Thailand
- Tree cover
- 55%
- Air quality
- 61
- Latkrabang19.0 km
Thailand
- Tree cover
- 37%
- Air quality
- 58
- Bueng Kum22.2 km
Thailand
- Tree cover
- 33%
- Air quality
- 59
- Sai Mai24.5 km
Thailand
- Tree cover
- 18%
- Air quality
- 56
- Khlong Luang32.9 km
Thailand
- Tree cover
- 35%
- Air quality
- 67
- Watthana33.0 km
Thailand
- Tree cover
- 23%
- Air quality
- 59
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Frequently asked
Questions about Nong Chok
What is the air quality (AQI) in Nong Chok right now?
The latest reading for Nong Chok shows an AQI of 54 (Moderate), measured Nov 12, 01:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Nong Chok District Office, Bangkok, 100 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Nong Chok today?
At AQI 54 (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 Nong Chok been like this week?
Over the last 7 days, the CAMS air-quality model put Nong Chok'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 Nong Chok lost since 2001?
Since 2001, the area within 10 km of Nong Chok has lost about 16 hectares of forest (about 22 football pitches): 2.2% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (17%). About 5 hectares (32%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Nong Chok grew from about 1,640 hectares to 1,750 hectares, a net gain of about 114 hectares (+7%). New forest grew on about 160 hectares, while 46 hectares were lost.
What is the tree count in Nong Chok?
Nong Chok has an estimated 158,022 trees across the 12.57 km² measured — 50.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Nong Chok need?
Nong Chok has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Nong Chok's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Krathum Rai, 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 Krathum Rai; the tree count is an estimate derived from that cover.
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