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Airleaf
Aerial study of a dense urban district organized around a green corridor
All New Zealand reports

City report · New Zealand

Lower Hutt

Measured across a 2 km radius around Woburn, Lower Hutt, New Zealand (12.57 km²)

Tree cover
55.3%
Air quality
23Good
Trees in this area
173K
More trees needed
0
Area analyzed
12.53 km²land, in a 12.57 km² circle
Satellite image
Feb 23, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Feb 23, 2026

Lower Hutt's tree count comes to 173,209 trees across 12.53 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 23 (Good): Air quality is satisfactory for everyone.

Tree cover detail

Healthy tree cover

55.3% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.

Target reached

Trees in this area

173,209

Target trees

173,209

More trees needed

0

CO₂ if planted / yr

0 kg

Air quality detail

AQI 23Good

Observed Sep 29, 00:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.

Model estimate · no ground station nearby

Health signal

Air quality is satisfactory for everyone.

PM2.5

0.9

PM10

1.3

NO₂

2.1

O₃

46.0

SO₂

0.4

CO

84.0

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Lower Hutt tree cover and air quality — measured by Airleaf
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Frequently asked

Questions about Lower Hutt

What is the tree count in Lower Hutt?

Lower Hutt has an estimated 173,209 trees across the 12.53 km² of land measured — 55.3% tree cover, already past the 30% tree-cover target set for this area.

How many more trees does Lower Hutt need?

Lower Hutt has already reached its tree-cover target, so no additional trees are needed to close the gap.

What is the air quality (AQI) in Lower Hutt right now?

The latest reading for Lower Hutt shows an AQI of 23 (Good), observed Sep 29, 00:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.

How is Lower Hutt'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 Woburn; the tree count is an estimate derived from that cover. Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors.

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Methodology. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search imagery at 10 m detail for the stated radius; the tree count is an estimate derived from that cover. Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors.