City report · China · Chongqing
Hechuan
Measured across a 2 km radius around Hechuan District, Chongqing, China (12.57 km²)
- Tree cover
- 29.1%
- Air quality
- 113Unhealthy for sensitive groups
- Trees in this area
- 76.1K
- More trees needed
- 15.4K
- Area analyzed
- 10.46 km²land, in a 12.57 km² circle
- Satellite image
- Sep 4, 2026
Hechuan's tree count comes to 76,062 trees across 10.46 km² of land — 6 points below the 35% tree-cover level considered healthy for this area, meaning roughly 15,421 more trees would close the gap. Air quality currently reads AQI 113 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Tree cover detail
Below target
29.1% tree cover against a 35% healthy-neighborhood target, across 10.46 km² of land.
Trees in this area
76,062
Target trees
91,483
More trees needed
15,421
CO₂ if planted / yr
339.3 t
Air quality detail
AQI 113Unhealthy for sensitive groups
Observed Sep 27, 10:00 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
40.4
PM10
40.5
NO₂
24.0
O₃
103.0
SO₂
10.1
CO
468.0
Frequently asked
Questions about Hechuan
What is the tree count in Hechuan?
Hechuan has an estimated 76,062 trees across the 10.46 km² of land measured — 29.1% tree cover, 6 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Hechuan need?
Hechuan needs roughly 15,421 more trees to close a 6-point shortfall against its 35% tree-cover target — about 339.3 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Hechuan right now?
The latest reading for Hechuan shows an AQI of 113 (Unhealthy for sensitive groups), observed Sep 27, 10:00 local time via Open-Meteo / CAMS, US EPA index. Sensitive groups should limit long or intense outdoor activity.
How is Hechuan'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 Hechuan District; 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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