Baía Farta vs Gabela
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.
Gabela has more tree cover — 13.1% against 1.0%.
Baía Farta has cleaner air right now — AQI 39 against 79.
- Tree cover gap
- 12.1 points
- Gabela is ahead.
- Air quality gap
- 40 AQI
- Baía Farta is cleaner.
- Trees between them
- 39.9K
- Gabela has more standing.
Angola
Angola
Tree cover
Share of the 2 km radius under canopy.
1.0%
13.1%
Air quality index
US EPA index, live, with its band. Lower is better.
39 · Good
79 · Moderate
Trees standing
Estimated from the measured canopy area.
1.3K
41.2K
Trees still needed
To reach the same canopy target. Fewer is better.
37.3K
53.1K
CO₂ absorbed each year
By the trees already standing.
28.3K kg
905K 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 modelled, with no ground station close enough to either.
PM2.5
Fine particles, the pollutant that usually sets the index.
9.3 µg/m³
25.4 µg/m³
PM10
Coarser particles — dust, pollen, road grit.
14.4 µg/m³
28.1 µg/m³
Nitrogen dioxide
Mostly traffic and combustion.
2.1 µg/m³
5.3 µg/m³
Ozone
Forms in sunlight; peaks on hot, still afternoons.
44 µg/m³
39 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 | Baía Farta | Gabela |
|---|---|---|
| 23 Sept | 54 | 183 |
| 24 Sept | 56 | 181 |
| 25 Sept | 53 | 153 |
| 26 Sept | 43 | 84 |
| 27 Sept | 50 | 69 |
| 28 Sept | 43 | 98 |
| 29 Sept | 38 | 92 |
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. Gabela leads here at 13.1%.
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: Baía Farta reads 39 (good) and Gabela reads 79 (moderate) right now.
Frequently asked
Baía Farta and Gabela, answered
Which has more trees, Baía Farta or Gabela?
Gabela, with roughly 41,155 trees inside its 2 km radius against 1,285. Tree cover tells a slightly different story from raw count: Gabela has the denser canopy at 13.1%.
Which has better air quality, Baía Farta or Gabela?
Baía Farta right now, at AQI 39 against 79 — 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?
Baía Farta needs about 37,262 more to reach its canopy target, and Gabela about 53,093. 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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