City report · Peru
Callao
Measured across a 2 km radius around Santa Maria Norte, Callao, Peru (12.57 km²)
- Tree cover
- 4.1%
- Air quality
- 51Moderate
- Trees in this area
- 10.8K
- More trees needed
- 68.3K
- Area analyzed
- 10.56 km²land, in a 12.57 km² circle
- Satellite image
- Sep 23, 2026
Callao's tree count comes to 10,820 trees across 10.56 km² of land — 26 points below the 30% tree-cover level considered healthy for this area, meaning roughly 68,348 more trees would close the gap. Air quality currently reads AQI 51 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
4.1% tree cover against a 30% healthy-neighborhood target, across 10.56 km² of land.
Trees in this area
10,820
Target trees
79,168
More trees needed
68,348
CO₂ if planted / yr
1,504 t
Air quality detail
AQI 51Moderate
Observed Sep 26, 22:00 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
12.2
PM10
44.0
NO₂
10.4
O₃
50.0
SO₂
5.7
CO
123.0
Frequently asked
Questions about Callao
What is the tree count in Callao?
Callao has an estimated 10,820 trees across the 10.56 km² of land measured — 4.1% tree cover, 26 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Callao need?
Callao needs roughly 68,348 more trees to close a 26-point shortfall against its 30% tree-cover target — about 1,504 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Callao right now?
The latest reading for Callao shows an AQI of 51 (Moderate), observed Sep 26, 22:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Callao'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 Santa Maria Norte; 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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