City report · United Kingdom · Wales
Swansea
Measured across a 1.2 mi (2 km) radius around Swansea, UK (4.9 sq mi)
- Tree cover
- 35.5%
- Air quality
- 33Good
- Trees in this area
- 86.4K
- More trees needed
- 0
- Area analyzed
- 3.8 sq miland, in a 4.9 sq mi circle
- Satellite image
- Aug 11, 2026
Swansea's tree count comes to 86,433 trees across 3.8 sq mi (9.74 km²) of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
35.5% tree cover against a 30% healthy-neighborhood target, across 3.8 sq mi (9.74 km²) of land.
Trees in this area
86,433
Target trees
86,433
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 33Good
Observed Sep 27, 05:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.3
PM10
9.6
NO₂
5.6
O₃
69.0
SO₂
1.6
CO
213.0
Frequently asked
Questions about Swansea
What is the tree count in Swansea?
Swansea has an estimated 86,433 trees across the 3.8 sq mi (9.74 km²) of land measured — 35.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Swansea need?
Swansea has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Swansea right now?
The latest reading for Swansea shows an AQI of 33 (Good), observed Sep 27, 05:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Swansea'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 1.2 mi (2 km) radius around Swansea; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS, US EPA index and may differ from street-level monitors.
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