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

Sibiu

Measured across a 2 km radius around The Lower Town, Sibiu, Romania (12.57 km²)

Tree cover
25.0%
Air quality
34Good
Trees in this area
78.4K
More trees needed
15.7K
Area analyzed
12.54 km²land, in a 12.57 km² circle
Satellite image
Sep 9, 2026
Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 9, 2026

Sibiu's tree count comes to 78,383 trees across 12.54 km² of land — 5 points below the 30% tree-cover level considered healthy for this area, meaning roughly 15,677 more trees would close the gap. Air quality currently reads AQI 34 (Good): Air quality is satisfactory for everyone.

Tree cover detail

Below target

25.0% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.

5 points below target

Trees in this area

78,383

Target trees

94,060

More trees needed

15,677

CO₂ if planted / yr

344.9 t

Air quality detail

AQI 34Good

Observed Sep 28, 07:00 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

8.1

PM10

11.5

NO₂

4.8

O₃

37.0

SO₂

0.7

CO

182.0

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

Questions about Sibiu

What is the tree count in Sibiu?

Sibiu has an estimated 78,383 trees across the 12.54 km² of land measured — 25.0% tree cover, 5 percentage points short of the 30% tree-cover target set for this area.

How many more trees does Sibiu need?

Sibiu needs roughly 15,677 more trees to close a 5-point shortfall against its 30% tree-cover target — about 344.9 t of extra CO₂ absorbed per year once grown.

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

The latest reading for Sibiu shows an AQI of 34 (Good), observed Sep 28, 07:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.

How is Sibiu'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 The Lower Town; 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.