- Tree cover
- 54.7%
- Air quality
- 34Good
- Trees in this area
- 172K
- More trees needed
- 0
- Area analysed
- 12.57 km²
- Satellite image
- Sep 16, 2026
San Marino's tree count comes to 171,845 trees across 12.57 km² — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 34 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
54.7% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
171,845
Target trees
171,845
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 34Good
Observed Sep 21, 04:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.4
PM10
7.9
NO₂
2.2
O₃
66.0
SO₂
0.2
CO
144.0
Frequently asked
Questions about San Marino
What is the tree count in San Marino?
San Marino has an estimated 171,845 trees across the 12.57 km² measured — 54.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does San Marino need?
San Marino has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in San Marino right now?
The latest reading for San Marino shows an AQI of 34 (Good), observed Sep 21, 04:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is San Marino'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 47890 San Marino; 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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