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Airleaf

Gabú vs Kamsar

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.

Gabú has more tree cover — 22.4% against 18.6%.

Gabú has cleaner air right now — AQI 17 against 25.

Tree cover gap
3.8 points
Gabú is ahead.
Air quality gap
8 AQI
Gabú is cleaner.
Trees between them
42.5K
Gabú has more standing.
Gabú

Guinea-Bissau

Kamsar

Guinea

Tree cover

Share of the 2 km radius under canopy.

22.4%

18.6%

Air quality index

US EPA index, live, with its band. Lower is better.

17 · Good

25 · Good

Trees standing

Estimated from the measured canopy area.

70.4K

27.9K

Trees still needed

To reach the same canopy target. Fewer is better.

23.9K

17.1K

CO₂ absorbed each year

By the trees already standing.

1.5M kg

613K 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.

4.1 µg/m³

5.7 µg/m³

PM10

Coarser particles — dust, pollen, road grit.

5.6 µg/m³

8.9 µg/m³

Nitrogen dioxide

Mostly traffic and combustion.

2 µg/m³

0.5 µg/m³

Ozone

Forms in sunlight; peaks on hot, still afternoons.

32 µg/m³

54 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.

GabúKamsar· daily US EPA index, last 7 days
0387522 Sept25 Sept28 Sept
Daily air quality index for Gabú and Kamsar
DayGabúKamsar
22 Sept6131
23 Sept3722
24 Sept1622
25 Sept3338
26 Sept3831
27 Sept2027
28 Sept2031

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. Gabú leads here at 22.4%.

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: Gabú reads 17 (good) and Kamsar reads 25 (good) right now.

Frequently asked

Gabú and Kamsar, answered

Which has more trees, Gabú or Kamsar?

Gabú, with roughly 70,372 trees inside its 2 km radius against 27,873. Tree cover tells a slightly different story from raw count: Gabú has the denser canopy at 22.4%.

Which has better air quality, Gabú or Kamsar?

Gabú right now, at AQI 17 against 25 — a gap of 8 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?

Gabú needs about 23,876 more to reach its canopy target, and Kamsar about 17,083. 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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