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Airleaf
Aerial study of a dense urban district organized around a green corridor
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City report · Nepal

Lahān

Measured across a 2 km radius around Lahan, Madhesh Province, Nepal (12.57 km²)

Tree cover
78.6%
Air quality
63Moderate
Trees in this area
247K
More trees needed
0
Area analyzed
12.57 km²
Satellite image
Sep 20, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 20, 2026

Lahān's tree count comes to 246,929 trees across 12.57 km² — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 63 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.

Tree cover detail

Healthy tree cover

78.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².

Target reached

Trees in this area

246,929

Target trees

246,929

More trees needed

0

CO₂ if planted / yr

0 kg

Air quality detail

AQI 63Moderate

Observed Sep 27, 08:45 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.

Model estimate

Health signal

Unusually sensitive people should consider limiting long outdoor exertion.

PM2.5

17.6

PM10

19.2

NO₂

4.3

O₃

81.0

SO₂

4.6

CO

335.0

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Lahān tree cover and air quality — measured by Airleaf
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Frequently asked

Questions about Lahān

What is the tree count in Lahān?

Lahān has an estimated 246,929 trees across the 12.57 km² measured — 78.6% tree cover, already past the 30% tree-cover target set for this area.

How many more trees does Lahān need?

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

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

The latest reading for Lahān shows an AQI of 63 (Moderate), observed Sep 27, 08:45 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.

How is Lahān'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 Lahan; 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.