City report · South Korea · Gangwon-do
Wŏnju
Measured across a 2 km radius around Galmeori 2-gil, Wonju-si, Gangwon-do, South Korea (12.57 km²)
- Tree cover
- 36.5%
- Air quality
- 127Unhealthy for sensitive groups
- Trees in this area
- 115K
- More trees needed
- 0
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 23, 2026
Wŏnju's tree count comes to 114,668 trees across 12.57 km² — already at or above the 35% tree-cover level considered healthy for this area. Air quality currently reads AQI 127 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Tree cover detail
Healthy tree cover
36.5% tree cover against a 35% healthy-neighborhood target, across 12.57 km².
Trees in this area
114,668
Target trees
114,668
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 127Unhealthy for sensitive groups
Observed Sep 27, 13:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
11.4
PM10
12.7
NO₂
0.5
O₃
154.0
SO₂
6.6
CO
159.0
Frequently asked
Questions about Wŏnju
What is the tree count in Wŏnju?
Wŏnju has an estimated 114,668 trees across the 12.57 km² measured — 36.5% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Wŏnju need?
Wŏnju has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Wŏnju right now?
The latest reading for Wŏnju shows an AQI of 127 (Unhealthy for sensitive groups), observed Sep 27, 13:00 local time via Open-Meteo / CAMS, US EPA index. Sensitive groups should limit long or intense outdoor activity.
How is Wŏnju'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 Galmeori 2-gil; 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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