City report · United States
Lancaster
Measured across a 2 km radius around Lancaster, CA, USA (12.57 km²)
- Tree cover
- 7.2%
- Air quality
- 60Moderate
- Trees in this area
- 22.6K
- More trees needed
- 71.6K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 19, 2026
Lancaster's tree count comes to 22,619 trees across 12.57 km² — 23 points below the 30% tree-cover level considered healthy for this area, meaning roughly 71,628 more trees would close the gap. Air quality currently reads AQI 60 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
7.2% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
22,619
Target trees
94,247
More trees needed
71,628
CO₂ if planted / yr
1,576 t
Air quality detail
AQI 60Moderate
Observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.5
PM10
14.6
NO₂
2.3
O₃
126.0
SO₂
2.3
CO
154.0
Frequently asked
Questions about Lancaster
What is the tree count in Lancaster?
Lancaster has an estimated 22,619 trees across the 12.57 km² measured — 7.2% tree cover, 23 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Lancaster need?
Lancaster needs roughly 71,628 more trees to close a 23-point shortfall against its 30% tree-cover target — about 1,576 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Lancaster right now?
The latest reading for Lancaster shows an AQI of 60 (Moderate), observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Lancaster'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 Lancaster; 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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