City report · Thailand
Ban I Chang Air quality today
Air quality in Ban I Chang currently reads AQI 67 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 67
Moderate
- PM2.5, fine particles (µg/m³)
- 17.8
- tree cover
- 60.9%
- trees in this area
- 191K
- more trees needed
- 0
Measured across a 2 km radius around Wang Yen, Bang Phae District, Ratchaburi, Thailand (12.57 km²), from a satellite image of Aug 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ban I Chang · AQI 67 (Moderate)
Ban I Chang's tree count comes to 191,323 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 Ban I Chang today: AQI 67, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Environmental Office 8 ratchaburi, 22.6 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
17.8
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 Ban I Chang's daily AQI at 61 on average, from 50 on Nov 11 to an hourly peak of 101 on Nov 8.
Where Ban I Chang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ban I Chang: Healthy tree cover
60.9% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
191,323
Target trees
191,323
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ban I Chang lost?
Since 2001, the area within 10 km of Ban I Chang has lost about 146 hectares of forest (about 210 football pitches): 7.8% of the forest it had in 2000. Most of it (92%) 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
- 146 haabout 210 football pitches
- Share of its forest
- 7.8%of what there was in 2000
- Cleared for good
- 135 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 18 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 | 5 ha | under 1 ha | 6 ha |
| 2002 | 5 ha | under 1 ha | 5 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | 5 ha | under 1 ha | 6 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 8 ha | 1 ha | 9 ha |
| 2007 | 4 ha | under 1 ha | 4 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 12 ha | 1 ha | 14 ha |
| 2010 | 10 ha | 2 ha | 11 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | 4 ha | 1 ha | 5 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 1 ha | under 1 ha | 1 ha |
| 2016 | 11 ha | under 1 ha | 11 ha |
| 2017 | 17 ha | 1 ha | 18 ha |
| 2018 | 2 ha | under 1 ha | 2 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 3 ha | under 1 ha | 3 ha |
| 2021 | 3 ha | under 1 ha | 3 ha |
| 2022 | 2 ha | under 1 ha | 3 ha |
| 2023 | 15 ha | under 1 ha | 15 ha |
| 2024 | 6 ha | under 1 ha | 6 ha |
| 2025 | 9 ha | under 1 ha | 9 ha |
What is causing deforestation around Ban I Chang?
- Farms, pasture and plantationscleared for good74% · 109 ha
- Towns and roadscleared for good17% · 24 ha
- Unknown causescause unknown8% · 12 ha
Also: mining and energy, logging.
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
- 4,950 ha
- Forest in 2020
- 4,700 ha
- Overall change
- −246 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ban I Chang shrank from about 4,950 hectares to 4,700 hectares, a net loss of about 246 hectares (−5%). New forest grew on about 253 hectares, but 499 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 Ban I Chang
Same 2 km radius, same index — so they compare directly.
- Nakhon Pathom20.1 km
Thailand
- Tree cover
- 38%
- Air quality
- 73
- Ban Samae Dam54.7 km
Thailand
- Tree cover
- 40%
- Air quality
- 60
- Bang Khae55.3 km
Thailand
- Tree cover
- 30%
- Air quality
- 58
- Bangkok65.5 km
Thailand
- Tree cover
- 12%
- Air quality
- 58
- Mueang Nonthaburi68.9 km
Thailand
- Tree cover
- 31%
- Air quality
- 57
- Phra Pradaeng69.1 km
Thailand
- Tree cover
- 25%
- Air quality
- 58
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Frequently asked
Questions about Ban I Chang
What is the air quality (AQI) in Ban I Chang right now?
The latest reading for Ban I Chang shows an AQI of 67 (Moderate), measured Nov 11, 22:00 local time by the Environmental Office 8 ratchaburi ground monitoring station, 22.6 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 Ban I Chang today?
At AQI 67 (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 Ban I Chang been like this week?
Over the last 7 days, the CAMS air-quality model put Ban I Chang's daily AQI at 61 on average, from 50 on Nov 11 to an hourly peak of 101 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Ban I Chang lost since 2001?
Since 2001, the area within 10 km of Ban I Chang has lost about 146 hectares of forest (about 210 football pitches): 7.8% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Ban I Chang shrank from about 4,950 hectares to 4,700 hectares, a net loss of about 246 hectares (−5%). New forest grew on about 253 hectares, but 499 hectares were lost.
What is the tree count in Ban I Chang?
Ban I Chang has an estimated 191,323 trees across the 12.57 km² measured — 60.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ban I Chang need?
Ban I Chang has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ban I Chang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Wang Yen, 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 Wang Yen; the tree count is an estimate derived from that cover.
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