Amersfoort vs Paderborn
Tree cover and air quality for both, measured the same way: Sentinel-2 imagery at 10 m detail over a 2 km radius from each city centre, and the live US EPA air quality index. Same radius and same index, so the two numbers compare directly.
Amersfoort has more tree cover — 57.5% against 57.2%.
Paderborn has cleaner air right now — AQI 12 against 52.
- Tree cover gap
- 0.3 points
- Amersfoort is ahead.
- Air quality gap
- 40 AQI
- Paderborn is cleaner.
- Trees between them
- 943
- Amersfoort has more standing.
The Netherlands
Germany
Tree cover
Share of the 2 km radius under canopy.
57.5%
57.2%
Air quality index
US EPA index, live, with its band. Lower is better.
52 · Moderate
12 · Good
Trees standing
Estimated from the measured canopy area.
181K
180K
Trees still needed
To reach the same canopy target. Fewer is better.
0
0
CO₂ absorbed each year
By the trees already standing.
4.0M kg
4.0M kg
Air quality in detail
What each city is breathing
Concentrations in µg/m³, measured at the same moment as the index above. Lower is better in every row. Both are read from nearby ground stations.
PM2.5
Fine particles, the pollutant that usually sets the index.
12.7 µg/m³
2.8 µg/m³
The last week, day by day
A single reading can catch a city on a bad afternoon. The week says whether it was the weather or the place.
| Day | Amersfoort | Paderborn |
|---|---|---|
| 22 Sept | 47 | 31 |
| 23 Sept | 57 | 37 |
| 24 Sept | 28 | 33 |
| 25 Sept | 42 | 32 |
| 26 Sept | 45 | 36 |
| 27 Sept | 63 | 42 |
| 28 Sept | 54 | 39 |
Reading these numbers
What is actually being measured
Tree cover
The share of ground under canopy inside a 2 km radius of each city centre, read from Sentinel-2 satellite imagery at 10 m detail. It is a measurement of that circle, not of the whole municipality — which is exactly what makes the two comparable, since city boundaries are drawn to wildly different rules around the world. Amersfoort leads here at 57.5%.
Air quality index
The live US EPA index, computed from current pollutant concentrations — ground stations where a city has them nearby, and a model everywhere else. It moves hour to hour, so this is a snapshot rather than a verdict on either place: Amersfoort reads 52 (moderate) and Paderborn reads 12 (good) right now.
Frequently asked
Amersfoort and Paderborn, answered
Which has more trees, Amersfoort or Paderborn?
Amersfoort, with roughly 180,642 trees inside its 2 km radius against 179,699. Tree cover tells a slightly different story from raw count: Amersfoort has the denser canopy at 57.5%.
Which has better air quality, Amersfoort or Paderborn?
Paderborn right now, at AQI 12 against 52 — a gap of 40 points. This is a live reading rather than an annual average, so it can reverse within a day.
How many more trees does each city need?
Amersfoort needs about 0 more to reach its canopy target, and Paderborn about 0. The target is the same share of ground for both, so the figures are directly comparable.
Are these two measured the same way?
Yes — that is the point of the page. Identical radius, identical satellite source at 10 m detail, and the same US EPA index for air. Nothing here is adjusted for population, city limits or climate, so the numbers describe the same-sized circle of ground in each place.
Keep going
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