City report · Germany
Saarbrücken
Measured across a 2 km radius around Sankt Johann, Mitte, Saarbrücken, Germany (12.57 km²)
- Tree cover
- 55.5%
- Air quality
- 42Good
- Trees in this area
- 173K
- More trees needed
- 0
- Area analyzed
- 12.48 km²land, in a 12.57 km² circle
- Satellite image
- Sep 25, 2026
Saarbrücken's tree count comes to 173,138 trees across 12.48 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 42 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
55.5% tree cover against a 30% healthy-neighborhood target, across 12.48 km² of land.
Trees in this area
173,138
Target trees
173,138
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 42Good
Observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
10.2
PM10
14.1
NO₂
9.4
O₃
43.0
SO₂
1.5
CO
205.0
Frequently asked
Questions about Saarbrücken
What is the tree count in Saarbrücken?
Saarbrücken has an estimated 173,138 trees across the 12.48 km² of land measured — 55.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Saarbrücken need?
Saarbrücken has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Saarbrücken right now?
The latest reading for Saarbrücken shows an AQI of 42 (Good), observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Saarbrücken'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 Sankt Johann; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS, US EPA index and may differ from street-level monitors.
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