City report · Penang, Malaysia
Tasek Glugor Air quality today
Air quality in Tasek Glugor currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 53
Moderate
- PM2.5, fine particles (µg/m³)
- 10.0
- tree cover
- 58.0%
- trees in this area
- 182K
- more trees needed
- 0
Measured across a 2 km radius around Tasek Gelugor, Penang, Malaysia (12.57 km²), from a satellite image of Jul 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tasek Glugor · AQI 53 (Moderate)
Tasek Glugor's tree count comes to 182,212 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 Tasek Glugor today: AQI 53, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Kulim Hi-Tech, Kedah, Malaysia, 13.4 km away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.0
PM10
15.6
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 Tasek Glugor's daily AQI at 55 on average, from 45 on Nov 5 to an hourly peak of 78 on Nov 6.
This is the US EPA AQI. How it differs from Malaysia's API (IPU) · The full guide
Where Tasek Glugor stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tasek Glugor: Healthy tree cover
58.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
182,212
Target trees
182,212
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Tasek Glugor lost?
Since 2001, the area within 10 km of Tasek Glugor has lost about 7,220 hectares of forest (about 10,000 football pitches): 56% 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 February 2017 of a 5 × 5 km area about 4 km southeast of the city center.
- Forest lost since 2001
- 7,220 haabout 10,000 football pitches
- Share of its forest
- 56%of what there was in 2000
- Cleared for good
- 7,210 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 272 hectares a year in 2021–2025, against 280 hectares a year in 2016–2020. The worst year was 2010, when about 621 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 | 121 ha | 1 ha | 122 ha |
| 2002 | 337 ha | 1 ha | 338 ha |
| 2003 | 82 ha | under 1 ha | 82 ha |
| 2004 | 210 ha | 1 ha | 211 ha |
| 2005 | 251 ha | 1 ha | 252 ha |
| 2006 | 403 ha | under 1 ha | 403 ha |
| 2007 | 168 ha | 1 ha | 169 ha |
| 2008 | 177 ha | under 1 ha | 177 ha |
| 2009 | 354 ha | 1 ha | 355 ha |
| 2010 | 621 ha | under 1 ha | 621 ha |
| 2011 | 310 ha | under 1 ha | 310 ha |
| 2012 | 271 ha | under 1 ha | 271 ha |
| 2013 | 327 ha | under 1 ha | 327 ha |
| 2014 | 518 ha | 1 ha | 519 ha |
| 2015 | 308 ha | under 1 ha | 308 ha |
| 2016 | 301 ha | 1 ha | 302 ha |
| 2017 | 345 ha | under 1 ha | 345 ha |
| 2018 | 253 ha | under 1 ha | 253 ha |
| 2019 | 259 ha | under 1 ha | 259 ha |
| 2020 | 239 ha | under 1 ha | 239 ha |
| 2021 | 247 ha | under 1 ha | 247 ha |
| 2022 | 117 ha | under 1 ha | 117 ha |
| 2023 | 578 ha | under 1 ha | 578 ha |
| 2024 | 219 ha | 1 ha | 220 ha |
| 2025 | 196 ha | 1 ha | 197 ha |
What is causing deforestation around Tasek Glugor?
- Farms, pasture and plantationscleared for good58% · 4,180 ha
- Towns and roadscleared for good39% · 2,810 ha
- Mining and energycleared for good3.2% · 228 ha
Also: logging, 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
- 16,900 ha
- Forest in 2020
- 14,300 ha
- Overall change
- −2,620 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tasek Glugor shrank from about 16,900 hectares to 14,300 hectares, a net loss of about 2,620 hectares (−16%). New forest grew on about 1,690 hectares, but 4,310 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 Tasek Glugor
Same 2 km radius, same index — so they compare directly.
- Bukit Mertajam13.5 km
Malaysia
- Tree cover
- 42%
- Air quality
- 56
- Kulim14.6 km
Malaysia
- Tree cover
- 57%
- Air quality
- 20
- Butterworth17.4 km
Malaysia
- Tree cover
- 21%
- Air quality
- 54
- Kota Kuala Muda18.5 km
Malaysia
- Tree cover
- 29%
- Air quality
- 55
- Sungai Petani18.6 km
Malaysia
- Tree cover
- 29%
- Air quality
- 52
- Paya Terubong27.0 km
Malaysia
- Tree cover
- 79%
- Air quality
- 48
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Frequently asked
Questions about Tasek Glugor
What is the air quality (AQI) in Tasek Glugor right now?
The latest reading for Tasek Glugor shows an AQI of 53 (Moderate), measured Nov 11, 23:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Kulim Hi-Tech, Kedah, Malaysia, 13.4 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Tasek Glugor today?
At AQI 53 (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 Tasek Glugor been like this week?
Over the last 7 days, the CAMS air-quality model put Tasek Glugor's daily AQI at 55 on average, from 45 on Nov 5 to an hourly peak of 78 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Tasek Glugor'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 Tasek Glugor lost since 2001?
Since 2001, the area within 10 km of Tasek Glugor has lost about 7,220 hectares of forest (about 10,000 football pitches): 56% 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 has stayed about the same: about 272 hectares a year in 2021–2025, against 280 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Tasek Glugor shrank from about 16,900 hectares to 14,300 hectares, a net loss of about 2,620 hectares (−16%). New forest grew on about 1,690 hectares, but 4,310 hectares were lost.
What is the tree count in Tasek Glugor?
Tasek Glugor has an estimated 182,212 trees across the 12.57 km² measured — 58.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Tasek Glugor need?
Tasek Glugor has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Tasek Glugor's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Tasek Gelugor, 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 Tasek Gelugor; the tree count is an estimate derived from that cover.
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