City report · United States
Stockton
Measured across a 2 km radius around Civic Center, Stockton, CA, USA (12.57 km²)
- Tree cover
- 13.6%
- Air quality
- 56Moderate
- Trees in this area
- 42.3K
- More trees needed
- 51.1K
- Area analysed
- 12.46 km²land, in a 12.57 km² circle
- Satellite image
- Sep 15, 2026
Stockton's tree count comes to 42,341 trees across 12.46 km² of land — 16 points below the 30% tree-cover level considered healthy for this area, meaning roughly 51,058 more trees would close the gap. Air quality currently reads AQI 56 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
13.6% tree cover against a 30% healthy-neighbourhood target, across 12.46 km² of land.
Trees in this area
42,341
Target trees
93,399
More trees needed
51,058
CO₂ if planted / yr
1,123 t
Air quality detail
AQI 56Moderate
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
13.5
PM10
44.5
NO₂
8.5
O₃
69.0
SO₂
1.9
CO
131.0
Frequently asked
Questions about Stockton
What is the tree count in Stockton?
Stockton has an estimated 42,341 trees across the 12.46 km² of land measured — 13.6% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Stockton need?
Stockton needs roughly 51,058 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,123 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Stockton right now?
The latest reading for Stockton shows an AQI of 56 (Moderate), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Stockton'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 Civic Center; 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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