City report · Johor, Malaysia
Pasir Gudang Air quality today
Air quality in Pasir Gudang currently reads AQI 81 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 81
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 25.4
- tree cover
- 23.6%
- trees in this area
- 74.0K
- more trees needed
- 20.1K
Measured across a 2 km radius around Kawasan Perindustrian Pasir Gudang, 81700 Pasir Gudang, Johor, Malaysia (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Pasir Gudang · AQI 81 (Moderate)
Pasir Gudang's tree count comes to 73,993 trees across 12.54 km² of land, 6 points below the 30% tree-cover level considered healthy for this area, so roughly 20,066 more trees would close the gap.
Air quality detail
Air quality in Pasir Gudang today: AQI 81, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Pasir Gudang, Johor, Malaysia, 1.6 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
25.4
PM10
33.5
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 Pasir Gudang'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 Pasir Gudang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Pasir Gudang: Below target
23.6% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
73,993
Target trees
94,059
More trees needed
20,066
CO₂ if planted / yr
441.5 t
Deforestation · 2001–2025
How much forest has Pasir Gudang lost?
Since 2001, the area within 10 km of Pasir Gudang has lost about 4,670 hectares of forest (about 6,500 football pitches): 48% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from May 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 4,670 haabout 6,500 football pitches
- Share of its forest
- 48%of what there was in 2000
- Cleared for good
- 4,640 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 97 hectares a year in 2021–2025, down from 377 hectares a year in 2016–2020. The worst year was 2019, when about 752 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 | 14 ha | under 1 ha | 14 ha |
| 2002 | 51 ha | under 1 ha | 51 ha |
| 2003 | 16 ha | under 1 ha | 16 ha |
| 2004 | 175 ha | 1 ha | 176 ha |
| 2005 | 222 ha | 1 ha | 223 ha |
| 2006 | 183 ha | under 1 ha | 183 ha |
| 2007 | 129 ha | under 1 ha | 129 ha |
| 2008 | 120 ha | under 1 ha | 120 ha |
| 2009 | 430 ha | under 1 ha | 430 ha |
| 2010 | 183 ha | 1 ha | 184 ha |
| 2011 | 112 ha | under 1 ha | 112 ha |
| 2012 | 165 ha | under 1 ha | 165 ha |
| 2013 | 43 ha | under 1 ha | 43 ha |
| 2014 | 174 ha | 1 ha | 175 ha |
| 2015 | 278 ha | 1 ha | 279 ha |
| 2016 | 220 ha | under 1 ha | 220 ha |
| 2017 | 455 ha | 15 ha | 470 ha |
| 2018 | 309 ha | 2 ha | 311 ha |
| 2019 | 745 ha | 7 ha | 752 ha |
| 2020 | 133 ha | 1 ha | 134 ha |
| 2021 | 80 ha | 1 ha | 81 ha |
| 2022 | 38 ha | under 1 ha | 39 ha |
| 2023 | 238 ha | under 1 ha | 238 ha |
| 2024 | 57 ha | under 1 ha | 57 ha |
| 2025 | 69 ha | under 1 ha | 70 ha |
What is causing deforestation around Pasir Gudang?
- Farms, pasture and plantationscleared for good55% · 2,590 ha
- Towns and roadscleared for good42% · 1,970 ha
- Mining and energycleared for good1.6% · 77 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
- 10,300 ha
- Forest in 2020
- 7,270 ha
- Overall change
- −3,040 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Pasir Gudang shrank from about 10,300 hectares to 7,270 hectares, a net loss of about 3,040 hectares (−29%). New forest grew on about 1,130 hectares, but 4,160 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 Pasir Gudang
Same 2 km radius, same index — so they compare directly.
- Woodlands13.2 km
Singapore
- Tree cover
- 28%
- Air quality
- 75
- Ulu Bedok14.6 km
Singapore
- Tree cover
- 24%
- Air quality
- 62
- Johor Bahru16.4 km
Malaysia
- Tree cover
- 22%
- Air quality
- 76
- Singapore20.1 km
Singapore
- Tree cover
- 19%
- Air quality
- 62
- Jurong Town24.8 km
Singapore
- Tree cover
- 21%
- Air quality
- 73
- Mukim Pulai27.7 km
Malaysia
- Tree cover
- 40%
- Air quality
- 77
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Frequently asked
Questions about Pasir Gudang
What is the air quality (AQI) in Pasir Gudang right now?
The latest reading for Pasir Gudang shows an AQI of 81 (Moderate), measured Nov 12, 00:00 local time by the Pasir Gudang, Johor, Malaysia ground monitoring station, 1.6 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 Pasir Gudang today?
At AQI 81 (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 Pasir Gudang been like this week?
Over the last 7 days, the CAMS air-quality model put Pasir Gudang'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 Pasir Gudang'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 Pasir Gudang lost since 2001?
Since 2001, the area within 10 km of Pasir Gudang has lost about 4,670 hectares of forest (about 6,500 football pitches): 48% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 97 hectares a year in 2021–2025, down from 377 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Pasir Gudang shrank from about 10,300 hectares to 7,270 hectares, a net loss of about 3,040 hectares (−29%). New forest grew on about 1,130 hectares, but 4,160 hectares were lost.
What is the tree count in Pasir Gudang?
Pasir Gudang has an estimated 73,993 trees across the 12.54 km² of land measured — 23.6% tree cover, 6 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Pasir Gudang need?
Pasir Gudang needs roughly 20,066 more trees to close a 6-point shortfall against its 30% tree-cover target — about 441.5 t of extra CO₂ absorbed per year once grown.
How are Pasir Gudang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Kawasan Perindustrian Pasir Gudang, 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 Kawasan Perindustrian Pasir Gudang; the tree count is an estimate derived from that cover.
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