Boujdour vs Santa Cruz de Tenerife
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.
Santa Cruz de Tenerife has more tree cover — 7.5% against 0.0%.
Santa Cruz de Tenerife has cleaner air right now — AQI 25 against 155.
- Tree cover gap
- 7.5 points
- Santa Cruz de Tenerife is ahead.
- Air quality gap
- 130 AQI
- Santa Cruz de Tenerife is cleaner.
- Trees between them
- 17.7K
- Santa Cruz de Tenerife has more standing.
Western Sahara
Tree cover
Share of the 2 km radius under canopy.
0.0%
7.5%
Air quality index
US EPA index, live, with its band. Lower is better.
155 · Unhealthy
25 · Good
Trees standing
Estimated from the measured canopy area.
0
17.7K
Trees still needed
To reach the same canopy target. Fewer is better.
108K
53.0K
CO₂ absorbed each year
By the trees already standing.
0 kg
389K 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. Santa Cruz de Tenerife is read from nearby ground stations and Boujdour is modelled — worth knowing, since the two are not quite like for like.
PM2.5
Fine particles, the pollutant that usually sets the index.
58.6 µg/m³
5.9 µg/m³
Nitrogen dioxide
Mostly traffic and combustion.
0.2 µg/m³
19 µg/m³
Ozone
Forms in sunlight; peaks on hot, still afternoons.
62 µg/m³
30 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 | Boujdour | Santa Cruz de Tenerife |
|---|---|---|
| 22 Sept | 115 | 71 |
| 23 Sept | 99 | 81 |
| 24 Sept | 157 | 77 |
| 25 Sept | 347 | 64 |
| 26 Sept | 140 | 63 |
| 27 Sept | 193 | 80 |
| 28 Sept | 140 | 84 |
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. Santa Cruz de Tenerife leads here at 7.5%.
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: Boujdour reads 155 (unhealthy) and Santa Cruz de Tenerife reads 25 (good) right now.
Frequently asked
Boujdour and Santa Cruz de Tenerife, answered
Which has more trees, Boujdour or Santa Cruz de Tenerife?
Santa Cruz de Tenerife, with roughly 17,671 trees inside its 2 km radius against 0. Tree cover tells a slightly different story from raw count: Santa Cruz de Tenerife has the denser canopy at 7.5%.
Which has better air quality, Boujdour or Santa Cruz de Tenerife?
Santa Cruz de Tenerife right now, at AQI 25 against 155 — a gap of 130 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?
Boujdour needs about 108,196 more to reach its canopy target, and Santa Cruz de Tenerife about 53,014. 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.
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