City report · United States
Torrance
Measured across a 2 km radius around Madrona, Torrance, CA, USA (12.57 km²)
- Tree cover
- 5.9%
- Air quality
- 61Moderate
- Trees in this area
- 18.5K
- More trees needed
- 75.6K
- Area analysed
- 12.56 km²land, in a 12.57 km² circle
- Satellite image
- Sep 19, 2026
Torrance's tree count comes to 18,517 trees across 12.56 km² of land — 24 points below the 30% tree-cover level considered healthy for this area, meaning roughly 75,637 more trees would close the gap. Air quality currently reads AQI 61 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
5.9% tree cover against a 30% healthy-neighbourhood target, across 12.56 km² of land.
Trees in this area
18,517
Target trees
94,154
More trees needed
75,637
CO₂ if planted / yr
1,664 t
Air quality detail
AQI 61Moderate
Observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.4
PM10
13.4
NO₂
12.6
O₃
80.0
SO₂
3.7
CO
131.0
Frequently asked
Questions about Torrance
What is the tree count in Torrance?
Torrance has an estimated 18,517 trees across the 12.56 km² of land measured — 5.9% tree cover, 24 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Torrance need?
Torrance needs roughly 75,637 more trees to close a 24-point shortfall against its 30% tree-cover target — about 1,664 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Torrance right now?
The latest reading for Torrance shows an AQI of 61 (Moderate), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Torrance'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 Madrona; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS and may differ from street-level monitors.
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