City report · Germany · Bavaria
Erlangen
Measured across a 2 km radius around Erlangen, Germany (12.57 km²)
- Tree cover
- 50.7%
- Air quality
- 42Good
- Trees in this area
- 159K
- More trees needed
- 0
- Area analyzed
- 12.57 km²
- Satellite image
- Aug 13, 2026
Erlangen's tree count comes to 159,279 trees across 12.57 km² — 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
50.7% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
159,279
Target trees
159,279
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
10.0
PM10
13.4
NO₂
6.0
O₃
53.0
SO₂
0.4
CO
198.0
Frequently asked
Questions about Erlangen
What is the tree count in Erlangen?
Erlangen has an estimated 159,279 trees across the 12.57 km² measured — 50.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Erlangen need?
Erlangen has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Erlangen right now?
The latest reading for Erlangen 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 Erlangen'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 Erlangen; 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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