Airleaf
Aerial study of a dense urban district organised around a green corridor
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City report · Jersey

Saint Helier

Measured across a 2 km radius around St Helier, Jersey (12.57 km²)

Tree cover
33%
Air quality
38Good
Trees in this area
80.7K
More trees needed
0
Area analysed
12.57 km²
Satellite image
Sep 14, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 14, 2026

Tree cover detail

Healthy tree cover

32.5% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².

Target reached

Trees in this area

80,723

Target trees

80,723

More trees needed

0

CO₂ if planted / yr

0 kg

Air quality detail

AQI 38Good

Observed Sep 20, 2026 via Open-Meteo / CAMS. Values in µg/m³.

Health signal

Air quality is satisfactory for everyone.

PM2.5

5.4

PM10

14.6

NO₂

1.1

O₃

76

SO₂

0.1

CO

150

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