City report · Malaysia · Penang
Bukit Mertajam
Measured across a 2 km radius around Bukit Mertajam, Penang, Malaysia (12.57 km²)
- Tree cover
- 47.2%
- Air quality
- 73Moderate
- Trees in this area
- 144K
- More trees needed
- 0
- Area analyzed
- 12.24 km²land, in a 12.57 km² circle
- Satellite image
- Jun 14, 2026
Bukit Mertajam's tree count comes to 144,428 trees across 12.24 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 73 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
47.2% tree cover against a 30% healthy-neighborhood target, across 12.24 km² of land.
Trees in this area
144,428
Target trees
144,428
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 73Moderate
Observed Sep 27, 11:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.2
PM10
15.7
NO₂
3.6
O₃
121.0
SO₂
9.7
CO
304.0
Frequently asked
Questions about Bukit Mertajam
What is the tree count in Bukit Mertajam?
Bukit Mertajam has an estimated 144,428 trees across the 12.24 km² of land measured — 47.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bukit Mertajam need?
Bukit Mertajam has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Bukit Mertajam right now?
The latest reading for Bukit Mertajam shows an AQI of 73 (Moderate), observed Sep 27, 11:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Bukit Mertajam's tree cover and air quality measured?
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 Bukit Mertajam; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS, US EPA index and may differ from street-level monitors.
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