All Sri Lanka reports
City report · Sri Lanka
Colombo
Measured across a 2 km radius around Colombo 11, Colombo, Sri Lanka (12.57 km²)
- Tree cover
- 14%
- Air quality
- 53Moderate
- Trees in this area
- 33.2K
- More trees needed
- 36.4K
- Area analysed
- 12.57 km²
- Satellite image
- Jul 23, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Jul 23, 2026
Tree cover detail
Critically low
14.3% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
33,194
Target trees
69,571
More trees needed
36,377
CO₂ if planted / yr
800.3 t
Air quality detail
AQI 53Moderate
Observed Sep 20, 2026 via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
8
PM10
11.7
NO₂
10
O₃
43
SO₂
4.7
CO
186
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