
City report · Chile
Rancagua
Measured across a 2 km radius around Rancagua, O'Higgins, Chile (12.57 km²)
- Tree cover
- 9.0%
- Air quality
- 63Moderate
- Trees in this area
- 28.3K
- More trees needed
- 66.0K
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 14, 2026
Rancagua's tree count comes to 28,274 trees across 12.57 km² — 21 points below the 30% tree-cover level considered healthy for this area, meaning roughly 65,973 more trees would close the gap. Air quality currently reads AQI 63 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
9.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
28,274
Target trees
94,247
More trees needed
65,973
CO₂ if planted / yr
1,451 t
Air quality detail
AQI 63Moderate
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
17.6
PM10
18.9
NO₂
11.9
O₃
39.0
SO₂
5.0
CO
255.0
Frequently asked
Questions about Rancagua
What is the tree count in Rancagua?
Rancagua has an estimated 28,274 trees across the 12.57 km² measured — 9.0% tree cover, 21 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Rancagua need?
Rancagua needs roughly 65,973 more trees to close a 21-point shortfall against its 30% tree-cover target — about 1,451 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Rancagua right now?
The latest reading for Rancagua shows an AQI of 63 (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 Rancagua'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 Rancagua; 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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