City report · Chile · Santiago Metropolitan
Puente Alto
Measured across a 2 km radius around Puente Alto, Santiago Metropolitan Region, Chile (12.57 km²)
- Tree cover
- 10.1%
- Air quality
- 82Moderate
- Trees in this area
- 31.7K
- More trees needed
- 62.5K
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 14, 2026
Puente Alto's tree count comes to 31,730 trees across 12.57 km² — 20 points below the 30% tree-cover level considered healthy for this area, meaning roughly 62,518 more trees would close the gap. Air quality currently reads AQI 82 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
10.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
31,730
Target trees
94,248
More trees needed
62,518
CO₂ if planted / yr
1,375 t
Air quality detail
AQI 82Moderate
Observed Sep 27, 01:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
26.7
PM10
27.0
NO₂
8.5
O₃
113.0
SO₂
23.3
CO
597.0
Frequently asked
Questions about Puente Alto
What is the tree count in Puente Alto?
Puente Alto has an estimated 31,730 trees across the 12.57 km² measured — 10.1% tree cover, 20 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Puente Alto need?
Puente Alto needs roughly 62,518 more trees to close a 20-point shortfall against its 30% tree-cover target — about 1,375 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Puente Alto right now?
The latest reading for Puente Alto shows an AQI of 82 (Moderate), observed Sep 27, 01:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Puente Alto'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 Puente Alto; 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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