City report · Selangor, Malaysia
Sepang Air quality today
Air quality in Sepang currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 64
Moderate
- PM2.5, fine particles (µg/m³)
- 15.9
- tree cover
- 73.7%
- trees in this area
- 232K
- more trees needed
- 0
Measured across a 2 km radius around Pekan Sepang, Sepang, Selangor, Malaysia (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sepang · AQI 64 (Moderate)
Sepang's tree count comes to 231,535 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 Sepang today: AQI 64, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Nilai, Negeri Sembilan, Malaysia, 15.9 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.9
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 Sepang's daily AQI at 85 on average, from 71 on Nov 11 to an hourly peak of 157 on Nov 6.
This is the US EPA AQI. How it differs from Malaysia's API (IPU) · The full guide
Where Sepang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sepang: Healthy tree cover
73.7% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
231,535
Target trees
231,535
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Sepang lost?
Since 2001, the area within 10 km of Sepang has lost about 14,500 hectares of forest (about 20,000 football pitches): 70% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from March 2017 of a 5 × 5 km area about 5 km southwest of the city center.
- Forest lost since 2001
- 14,500 haabout 20,000 football pitches
- Share of its forest
- 70%of what there was in 2000
- Cleared for good
- 14,500 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 259 hectares a year in 2021–2025, down from 546 hectares a year in 2016–2020. The worst year was 2001, when about 1,870 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 | 1,860 ha | 13 ha | 1,870 ha |
| 2002 | 1,390 ha | under 1 ha | 1,390 ha |
| 2003 | 284 ha | under 1 ha | 284 ha |
| 2004 | 577 ha | under 1 ha | 577 ha |
| 2005 | 507 ha | under 1 ha | 507 ha |
| 2006 | 206 ha | under 1 ha | 206 ha |
| 2007 | 850 ha | under 1 ha | 850 ha |
| 2008 | 542 ha | under 1 ha | 542 ha |
| 2009 | 817 ha | under 1 ha | 817 ha |
| 2010 | 842 ha | under 1 ha | 842 ha |
| 2011 | 463 ha | under 1 ha | 463 ha |
| 2012 | 479 ha | under 1 ha | 479 ha |
| 2013 | 343 ha | 3 ha | 346 ha |
| 2014 | 721 ha | 1 ha | 722 ha |
| 2015 | 609 ha | under 1 ha | 609 ha |
| 2016 | 538 ha | 2 ha | 540 ha |
| 2017 | 701 ha | under 1 ha | 701 ha |
| 2018 | 520 ha | 4 ha | 524 ha |
| 2019 | 634 ha | 1 ha | 635 ha |
| 2020 | 332 ha | under 1 ha | 332 ha |
| 2021 | 438 ha | under 1 ha | 438 ha |
| 2022 | 187 ha | under 1 ha | 187 ha |
| 2023 | 151 ha | under 1 ha | 151 ha |
| 2024 | 279 ha | 1 ha | 280 ha |
| 2025 | 238 ha | 1 ha | 239 ha |
What is causing deforestation around Sepang?
- Farms, pasture and plantationscleared for good86% · 12,400 ha
- Towns and roadscleared for good13% · 1,830 ha
- Mining and energycleared for good1.7% · 251 ha
Also: 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
- 21,900 ha
- Forest in 2020
- 21,500 ha
- Overall change
- −379 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sepang stayed about the same size, at about 21,500 hectares: new forest grew on about 4,180 hectares, and about 4,560 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 Sepang
Same 2 km radius, same index — so they compare directly.
- Port Dickson19.4 km
Malaysia
- Tree cover
- 33%
- Air quality
- 64
- Seremban21.3 km
Malaysia
- Tree cover
- 39%
- Air quality
- 61
- Kajang33.8 km
Malaysia
- Tree cover
- 27%
- Air quality
- 71
- Puchong37.2 km
Malaysia
- Tree cover
- 14%
- Air quality
- 59
- Bukit Jalil40.3 km
Malaysia
- Tree cover
- 29%
- Air quality
- 59
- Petaling Jaya48.7 km
Malaysia
- Tree cover
- 16%
- Air quality
- 37
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Frequently asked
Questions about Sepang
What is the air quality (AQI) in Sepang right now?
The latest reading for Sepang shows an AQI of 64 (Moderate), measured Nov 11, 21:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Nilai, Negeri Sembilan, Malaysia, 15.9 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Sepang today?
At AQI 64 (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 Sepang been like this week?
Over the last 7 days, the CAMS air-quality model put Sepang's daily AQI at 85 on average, from 71 on Nov 11 to an hourly peak of 157 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Sepang'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 Sepang lost since 2001?
Since 2001, the area within 10 km of Sepang has lost about 14,500 hectares of forest (about 20,000 football pitches): 70% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 259 hectares a year in 2021–2025, down from 546 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Sepang stayed about the same size, at about 21,500 hectares: new forest grew on about 4,180 hectares, and about 4,560 hectares were lost.
What is the tree count in Sepang?
Sepang has an estimated 231,535 trees across the 12.57 km² measured — 73.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Sepang need?
Sepang has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Sepang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Pekan Sepang, 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 Pekan Sepang; the tree count is an estimate derived from that cover.
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