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Airleaf

Kamsar vs Manéah

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.

Manéah has more tree cover — 54.7% against 18.6%.

Manéah has cleaner air right now — AQI 24 against 29.

Tree cover gap
36.1 points
Manéah is ahead.
Air quality gap
5 AQI
Manéah is cleaner.
Trees between them
144K
Manéah has more standing.
Kamsar

Guinea

Manéah

Guinea

Tree cover

Share of the 2 km radius under canopy.

18.6%

54.7%

Air quality index

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

29 · Good

24 · Good

Trees standing

Estimated from the measured canopy area.

27.9K

172K

Trees still needed

To reach the same canopy target. Fewer is better.

17.1K

0

CO₂ absorbed each year

By the trees already standing.

613K kg

3.8M 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.

7 µg/m³

5.8 µg/m³

PM10

Coarser particles — dust, pollen, road grit.

10.6 µg/m³

8.4 µg/m³

Nitrogen dioxide

Mostly traffic and combustion.

0.5 µg/m³

1.1 µg/m³

Ozone

Forms in sunlight; peaks on hot, still afternoons.

55 µg/m³

51 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.

KamsarManéah· daily US EPA index, last 7 days
0255022 Sept25 Sept28 Sept
Daily air quality index for Kamsar and Manéah
DayKamsarManéah
22 Sept3123
23 Sept2220
24 Sept2223
25 Sept3835
26 Sept3133
27 Sept2725
28 Sept3325

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. Manéah leads here at 54.7%.

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: Kamsar reads 29 (good) and Manéah reads 24 (good) right now.

Frequently asked

Kamsar and Manéah, answered

Which has more trees, Kamsar or Manéah?

Manéah, with roughly 171,845 trees inside its 2 km radius against 27,873. Tree cover tells a slightly different story from raw count: Manéah has the denser canopy at 54.7%.

Which has better air quality, Kamsar or Manéah?

Manéah right now, at AQI 24 against 29 — a gap of 5 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?

Kamsar needs about 17,083 more to reach its canopy target, and Manéah 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.

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