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Airleaf

Bayamo vs Sancti Spíritus

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.

Sancti Spíritus has more tree cover — 57.7% against 50.5%.

Both are reading the same air quality index.

Tree cover gap
7.2 points
Sancti Spíritus is ahead.
Air quality gap
0 AQI
Both reading the same.
Trees between them
22.4K
Sancti Spíritus has more standing.

Tree cover

Share of the 2 km radius under canopy.

50.5%

57.7%

Air quality index

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

40 · Good

40 · Good

Trees standing

Estimated from the measured canopy area.

159K

181K

Trees still needed

To reach the same canopy target. Fewer is better.

0

0

CO₂ absorbed each year

By the trees already standing.

3.5M 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 modelled, with no ground station close enough to either.

PM2.5

Fine particles, the pollutant that usually sets the index.

9.7 µg/m³

9.6 µg/m³

PM10

Coarser particles — dust, pollen, road grit.

13.1 µg/m³

10.6 µg/m³

Nitrogen dioxide

Mostly traffic and combustion.

7.8 µg/m³

15 µg/m³

Ozone

Forms in sunlight; peaks on hot, still afternoons.

16 µg/m³

15 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.

BayamoSancti Spíritus· daily US EPA index, last 7 days
0255022 Sept25 Sept28 Sept
Daily air quality index for Bayamo and Sancti Spíritus
DayBayamoSancti Spíritus
22 Sept3217
23 Sept4020
24 Sept4129
25 Sept2728
26 Sept3028
27 Sept4132
28 Sept4338

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. Sancti Spíritus leads here at 57.7%.

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: Bayamo reads 40 (good) and Sancti Spíritus reads 40 (good) right now.

Frequently asked

Bayamo and Sancti Spíritus, answered

Which has more trees, Bayamo or Sancti Spíritus?

Sancti Spíritus, with roughly 181,089 trees inside its 2 km radius against 158,650. Tree cover tells a slightly different story from raw count: Sancti Spíritus has the denser canopy at 57.7%.

Which has better air quality, Bayamo or Sancti Spíritus?

Both are reading 40 on the US EPA index at the moment. Air quality changes through the day, so this can separate within hours.

How many more trees does each city need?

Bayamo needs about 0 more to reach its canopy target, and Sancti Spíritus 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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