City report · Thailand
Nakhon Ratchasima Air quality today
Air quality in Nakhon Ratchasima currently reads AQI 59 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 59
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.2
- tree cover
- 24.1%
- trees in this area
- 74.3K
- more trees needed
- 18.2K
Measured across a 2 km radius around Nakhon Ratchasima, Nai Mueang, Mueang Nakhon Ratchasima District, Nakhon Ratchasima 30000, Thailand (12.57 km²), from a satellite image of Sep 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Nakhon Ratchasima · AQI 59 (Moderate)
Nakhon Ratchasima's tree count comes to 74,350 trees across 12.34 km² of land, 6 points below the 30% tree-cover level considered healthy for this area, so roughly 18,202 more trees would close the gap.
Air quality detail
Air quality in Nakhon Ratchasima today: AQI 59, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Municipal Waste Water Pumping Station, 1.1 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.2
PM10
—
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 Nakhon Ratchasima's daily AQI at 33 on average, from 16 on Nov 10 to an hourly peak of 62 on Nov 5.
Where Nakhon Ratchasima stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nakhon Ratchasima: Below target
24.1% tree cover against a 30% healthy-neighborhood target, across 12.34 km² of land.
Trees in this area
74,350
Target trees
92,552
More trees needed
18,202
CO₂ if planted / yr
400.4 t
Deforestation · 2001–2025
How much forest has Nakhon Ratchasima lost?
Since 2001, the area within 10 km of Nakhon Ratchasima has lost about 110 hectares of forest (about 150 football pitches): 16% of the forest it had in 2000. Most of it (92%) 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
- 110 haabout 150 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 101 hadeforestation: turned into farms, mines or towns
The worst year was 2019, when about 13 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 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 1 ha | under 1 ha | 1 ha |
| 2005 | 1 ha | under 1 ha | 1 ha |
| 2006 | 5 ha | under 1 ha | 5 ha |
| 2007 | 4 ha | under 1 ha | 4 ha |
| 2008 | 2 ha | under 1 ha | 3 ha |
| 2009 | 9 ha | under 1 ha | 9 ha |
| 2010 | 8 ha | under 1 ha | 8 ha |
| 2011 | 4 ha | under 1 ha | 5 ha |
| 2012 | 1 ha | 2 ha | 3 ha |
| 2013 | 3 ha | 1 ha | 4 ha |
| 2014 | 3 ha | under 1 ha | 3 ha |
| 2015 | 4 ha | under 1 ha | 4 ha |
| 2016 | 8 ha | under 1 ha | 9 ha |
| 2017 | 3 ha | under 1 ha | 3 ha |
| 2018 | 8 ha | under 1 ha | 9 ha |
| 2019 | 13 ha | under 1 ha | 13 ha |
| 2020 | 5 ha | 1 ha | 6 ha |
| 2021 | 1 ha | under 1 ha | 1 ha |
| 2022 | 6 ha | under 1 ha | 6 ha |
| 2023 | 4 ha | under 1 ha | 4 ha |
| 2024 | 3 ha | under 1 ha | 3 ha |
| 2025 | 3 ha | 2 ha | 5 ha |
What is causing deforestation around Nakhon Ratchasima?
- Towns and roadscleared for good64% · 70 ha
- Farms, pasture and plantationscleared for good28% · 31 ha
- Loggingcan grow back7.4% · 8 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
- 6,840 ha
- Forest in 2020
- 6,430 ha
- Overall change
- −410 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nakhon Ratchasima shrank from about 6,840 hectares to 6,430 hectares, a net loss of about 410 hectares (−6%). New forest grew on about 527 hectares, but 937 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 Ratchasima
Same 2 km radius, same index — so they compare directly.
- Si Maha Phot128.5 km
Thailand
- Tree cover
- 49%
- Air quality
- 61
- Paoy Paet154.2 km
Cambodia
- Tree cover
- 13%
- Air quality
- 42
- Khon Kaen181.8 km
Thailand
- Tree cover
- 31%
- Air quality
- 64
- Nong Chok182.2 km
Thailand
- Tree cover
- 50%
- Air quality
- 52
- Khlong Luang186.3 km
Thailand
- Tree cover
- 35%
- Air quality
- 77
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Frequently asked
Questions about Nakhon Ratchasima
What is the air quality (AQI) in Nakhon Ratchasima right now?
The latest reading for Nakhon Ratchasima shows an AQI of 59 (Moderate), measured Nov 11, 23:00 local time by the Municipal Waste Water Pumping Station ground monitoring station, 1.1 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Nakhon Ratchasima today?
At AQI 59 (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 Ratchasima been like this week?
Over the last 7 days, the CAMS air-quality model put Nakhon Ratchasima's daily AQI at 33 on average, from 16 on Nov 10 to an hourly peak of 62 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 Ratchasima lost since 2001?
Since 2001, the area within 10 km of Nakhon Ratchasima has lost about 110 hectares of forest (about 150 football pitches): 16% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Nakhon Ratchasima shrank from about 6,840 hectares to 6,430 hectares, a net loss of about 410 hectares (−6%). New forest grew on about 527 hectares, but 937 hectares were lost.
What is the tree count in Nakhon Ratchasima?
Nakhon Ratchasima has an estimated 74,350 trees across the 12.34 km² of land measured — 24.1% tree cover, 6 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Nakhon Ratchasima need?
Nakhon Ratchasima needs roughly 18,202 more trees to close a 6-point shortfall against its 30% tree-cover target — about 400.4 t of extra CO₂ absorbed per year once grown.
How are Nakhon Ratchasima's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Nakhon Ratchasima, 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 Nakhon Ratchasima; the tree count is an estimate derived from that cover.
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