City report · Germany · Bremen
Bremen
Measured across a 2 km radius around Altstadt, Mitte, Bremen, Germany (12.57 km²)
- Tree cover
- 47.8%
- Air quality
- 65Moderate
- Trees in this area
- 143K
- More trees needed
- 0
- Area analyzed
- 12 km²land, in a 12.57 km² circle
- Satellite image
- Sep 25, 2026
Bremen's tree count comes to 143,411 trees across 12 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 65 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
47.8% tree cover against a 30% healthy-neighborhood target, across 12 km² of land.
Trees in this area
143,411
Target trees
143,411
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 65Moderate
Observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.6
PM10
20.3
NO₂
5.1
O₃
46.0
SO₂
0.6
CO
210.0
Frequently asked
Questions about Bremen
What is the tree count in Bremen?
Bremen has an estimated 143,411 trees across the 12 km² of land measured — 47.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bremen need?
Bremen has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Bremen right now?
The latest reading for Bremen shows an AQI of 65 (Moderate), observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Bremen'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 Altstadt; 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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