Zhengzhou
Measured across a 2 km radius around Erqi District, Zhengzhou, Henan, China (12.57 km²)
- Tree cover
- 24.5%
- Air quality
- 130Unhealthy for sensitive groups
- Trees in this area
- 76.9K
- More trees needed
- 33.0K
- Area analyzed
- 12.56 km²land, in a 12.57 km² circle
- Satellite image
- Sep 3, 2026
Zhengzhou's tree count comes to 76,892 trees across 12.56 km² of land — 10 points below the 35% tree-cover level considered healthy for this area, meaning roughly 32,954 more trees would close the gap. Air quality currently reads AQI 130 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Tree cover detail
Below target
24.5% tree cover against a 35% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
76,892
Target trees
109,846
More trees needed
32,954
CO₂ if planted / yr
725.0 t
Air quality detail
AQI 130Unhealthy for sensitive groups
Observed Sep 27, 12:00 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
47.3
PM10
48.5
NO₂
21.5
O₃
120.0
SO₂
8.4
CO
588.0
Frequently asked
Questions about Zhengzhou
What is the tree count in Zhengzhou?
Zhengzhou has an estimated 76,892 trees across the 12.56 km² of land measured — 24.5% tree cover, 10 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Zhengzhou need?
Zhengzhou needs roughly 32,954 more trees to close a 10-point shortfall against its 35% tree-cover target — about 725.0 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Zhengzhou right now?
The latest reading for Zhengzhou shows an AQI of 130 (Unhealthy for sensitive groups), observed Sep 27, 12:00 local time via Open-Meteo / CAMS, US EPA index. Sensitive groups should limit long or intense outdoor activity.
How is Zhengzhou'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 Erqi 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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