City report · Johor, Malaysia
Pelentong Air quality today
Air quality in Pelentong currently reads AQI 75 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 75
Moderate
- PM2.5, fine particles (µg/m³)
- 22.1
- tree cover
- 44.7%
- trees in this area
- 140K
- more trees needed
- 0
Measured across a 2 km radius around Taman Plentong Utama, 81750 Masai, Johor Darul Ta'zim, Malaysia (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Pelentong · AQI 75 (Moderate)
Pelentong's tree count comes to 140,429 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 Pelentong today: AQI 75, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Pasir Gudang, Johor, Malaysia, 9.8 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
22.1
PM10
29.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Malaysia Department of Environment (DOE); Air Polluant Index Management System
- 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 Pelentong's daily AQI at 37 on average, from 22 on Nov 9 to an hourly peak of 80 on Nov 4.
This is the US EPA AQI. How it differs from Malaysia's API (IPU) · The full guide
Where Pelentong stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Pelentong: Healthy tree cover
44.7% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
140,429
Target trees
140,429
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Pelentong lost?
Since 2001, the area within 10 km of Pelentong has lost about 4,780 hectares of forest (about 6,700 football pitches): 49% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from May 2017 of a 5 × 5 km area about 3 km northeast of the city center.
- Forest lost since 2001
- 4,780 haabout 6,700 football pitches
- Share of its forest
- 49%of what there was in 2000
- Cleared for good
- 4,760 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 166 hectares a year in 2021–2025, down from 249 hectares a year in 2016–2020. The worst year was 2006, when about 426 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 | 151 ha | under 1 ha | 151 ha |
| 2002 | 153 ha | 1 ha | 154 ha |
| 2003 | 37 ha | under 1 ha | 37 ha |
| 2004 | 400 ha | 3 ha | 403 ha |
| 2005 | 248 ha | under 1 ha | 248 ha |
| 2006 | 426 ha | under 1 ha | 426 ha |
| 2007 | 104 ha | under 1 ha | 104 ha |
| 2008 | 51 ha | under 1 ha | 51 ha |
| 2009 | 171 ha | under 1 ha | 171 ha |
| 2010 | 115 ha | under 1 ha | 115 ha |
| 2011 | 60 ha | under 1 ha | 60 ha |
| 2012 | 161 ha | under 1 ha | 161 ha |
| 2013 | 75 ha | under 1 ha | 75 ha |
| 2014 | 352 ha | under 1 ha | 352 ha |
| 2015 | 197 ha | 1 ha | 198 ha |
| 2016 | 267 ha | under 1 ha | 267 ha |
| 2017 | 176 ha | under 1 ha | 176 ha |
| 2018 | 392 ha | under 1 ha | 392 ha |
| 2019 | 195 ha | 6 ha | 201 ha |
| 2020 | 209 ha | 1 ha | 210 ha |
| 2021 | 113 ha | 1 ha | 114 ha |
| 2022 | 48 ha | under 1 ha | 49 ha |
| 2023 | 258 ha | under 1 ha | 258 ha |
| 2024 | 188 ha | under 1 ha | 188 ha |
| 2025 | 217 ha | 2 ha | 219 ha |
What is causing deforestation around Pelentong?
- Towns and roadscleared for good53% · 2,550 ha
- Farms, pasture and plantationscleared for good44% · 2,120 ha
- Mining and energycleared for good1.9% · 91 ha
Also: logging, storms, floods and other natural causes, 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
- 11,400 ha
- Forest in 2020
- 9,300 ha
- Overall change
- −2,130 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Pelentong shrank from about 11,400 hectares to 9,300 hectares, a net loss of about 2,130 hectares (−19%). New forest grew on about 1,400 hectares, but 3,530 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 Pelentong
Same 2 km radius, same index — so they compare directly.
- Punggol15.3 km
Singapore
- Tree cover
- 19%
- Air quality
- 69
- Ang Mo Kio New Town16.1 km
Singapore
- Tree cover
- 35%
- Air quality
- 64
- Mukim Pulai17.5 km
Malaysia
- Tree cover
- 40%
- Air quality
- 70
- Jurong Town23.9 km
Singapore
- Tree cover
- 21%
- Air quality
- 73
- Ulu Bedok24.5 km
Singapore
- Tree cover
- 24%
- Air quality
- 62
- Singapore26.2 km
Singapore
- Tree cover
- 19%
- Air quality
- 62
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Frequently asked
Questions about Pelentong
What is the air quality (AQI) in Pelentong right now?
The latest reading for Pelentong shows an AQI of 75 (Moderate), measured Nov 11, 22:00 local time by the Pasir Gudang, Johor, Malaysia ground monitoring station, 9.8 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 Pelentong today?
At AQI 75 (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 Pelentong been like this week?
Over the last 7 days, the CAMS air-quality model put Pelentong's daily AQI at 37 on average, from 22 on Nov 9 to an hourly peak of 80 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Pelentong's AQI the same as Malaysia's API (IPU)?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. Malaysia's Department of Environment (Jabatan Alam Sekitar) publishes its own Air Pollutant Index, the API or Indeks Pencemar Udara (IPU), every hour for each of its monitoring stations on APIMS (apims.doe.gov.my). Both scales call 0–50 good and 51–100 moderate; above that the IPU runs 101–200 unhealthy, 201–300 very unhealthy and over 300 hazardous. The two use different breakpoints and averaging times, so the numbers for the same hour often differ. For the official IPU reading, check the nearest station on APIMS.
How much forest has the area around Pelentong lost since 2001?
Since 2001, the area within 10 km of Pelentong has lost about 4,780 hectares of forest (about 6,700 football pitches): 49% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 166 hectares a year in 2021–2025, down from 249 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Pelentong shrank from about 11,400 hectares to 9,300 hectares, a net loss of about 2,130 hectares (−19%). New forest grew on about 1,400 hectares, but 3,530 hectares were lost.
What is the tree count in Pelentong?
Pelentong has an estimated 140,429 trees across the 12.57 km² measured — 44.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Pelentong need?
Pelentong has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Pelentong's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Taman Plentong Utama, 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 Taman Plentong Utama; the tree count is an estimate derived from that cover.
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