City report · United States
Santa Rosa
Measured across a 2 km radius around Santa Rosa, CA, USA (12.57 km²)
- Tree cover
- 25.6%
- Air quality
- 40Good
- Trees in this area
- 80.4K
- More trees needed
- 13.8K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 18, 2026
Santa Rosa's tree count comes to 80,425 trees across 12.57 km² — 4 points below the 30% tree-cover level considered healthy for this area, meaning roughly 13,823 more trees would close the gap. Air quality currently reads AQI 40 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Below target
25.6% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
80,425
Target trees
94,248
More trees needed
13,823
CO₂ if planted / yr
304.1 t
Air quality detail
AQI 40Good
Observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.6
PM10
11.1
NO₂
6.8
O₃
43.0
SO₂
0.6
CO
117.0
Frequently asked
Questions about Santa Rosa
What is the tree count in Santa Rosa?
Santa Rosa has an estimated 80,425 trees across the 12.57 km² measured — 25.6% tree cover, 4 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Santa Rosa need?
Santa Rosa needs roughly 13,823 more trees to close a 4-point shortfall against its 30% tree-cover target — about 304.1 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Santa Rosa right now?
The latest reading for Santa Rosa shows an AQI of 40 (Good), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is Santa Rosa'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 Rosa; 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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