City report · United States
San Antonio
Measured across a 2 km radius around Main/Military Plaza, San Antonio, TX, USA (12.57 km²)
- Tree cover
- 10.3%
- Air quality
- 52Moderate
- Trees in this area
- 32.4K
- More trees needed
- 61.9K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 15, 2026
San Antonio's tree count comes to 32,358 trees across 12.57 km² — 20 points below the 30% tree-cover level considered healthy for this area, meaning roughly 61,889 more trees would close the gap. Air quality currently reads AQI 52 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
10.3% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
32,358
Target trees
94,247
More trees needed
61,889
CO₂ if planted / yr
1,362 t
Air quality detail
AQI 52Moderate
Observed Sep 21, 22:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
6.8
PM10
8.8
NO₂
9.4
O₃
57.0
SO₂
0.7
CO
124.0
Frequently asked
Questions about San Antonio
What is the tree count in San Antonio?
San Antonio has an estimated 32,358 trees across the 12.57 km² measured — 10.3% tree cover, 20 percentage points short of the 30% tree-cover target set for this area.
How many more trees does San Antonio need?
San Antonio needs roughly 61,889 more trees to close a 20-point shortfall against its 30% tree-cover target — about 1,362 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in San Antonio right now?
The latest reading for San Antonio shows an AQI of 52 (Moderate), observed Sep 21, 22:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is San Antonio'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 Main/Military Plaza; 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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