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City report · Germany
Köln
Measured across a 2 km radius around Cäcilien-Viertel, Innenstadt, Köln, Germany (12.57 km²)
- Tree cover
- 25%
- Air quality
- 33Good
- Trees in this area
- 72.8K
- More trees needed
- 13.7K
- Area analysed
- 12.57 km²
- Satellite image
- Aug 16, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Aug 16, 2026
Tree cover detail
Below target
25.3% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
72,825
Target trees
86,524
More trees needed
13,699
CO₂ if planted / yr
301.4 t
Air quality detail
AQI 33Good
Observed Sep 20, 2026 via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.9
PM10
6.8
NO₂
7.6
O₃
53
SO₂
1.4
CO
166
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