Catamarca vs Cochabamba

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.

Cochabamba has more tree cover — 8.5% against 5.7%.

Cochabamba has cleaner air right now — AQI 38 against 127.

Tree cover gap: 2.8 points; Cochabamba is ahead.
Air quality gap: 89 AQI; Cochabamba is cleaner.
Trees between them: 8.8K; Cochabamba has more standing.

Catamarca

Argentina

Cochabamba

Bolivia

Tree cover

Share of the 2 km radius under canopy.

5.7%

8.5%

Air quality index

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

127 · Unhealthy for sensitive groups

38 · Good

Trees standing

Estimated from the measured canopy area.

17.9K

26.7K

Trees still needed

To reach the same canopy target. Fewer is better.

92.0K

67.5K

CO₂ absorbed each year

By the trees already standing.

394K kg

587K kg

The full Catamarca report17,907 trees, measured Sentinel-2 L2A (ESA Copernicus) via Earth Search The full Cochabamba report26,704 trees, measured Sentinel-2 L2A (ESA Copernicus) via Earth Search

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.

46.2 µg/m³

9 µg/m³

PM10

Coarser particles — dust, pollen, road grit.

48.4 µg/m³

9.2 µg/m³

Nitrogen dioxide

Mostly traffic and combustion.

8.8 µg/m³

3.9 µg/m³

Ozone

Forms in sunlight; peaks on hot, still afternoons.

107 µg/m³

33 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.

CatamarcaCochabamba· daily US EPA index, last 7 days

Daily air quality index for Catamarca and Cochabamba
Day	Catamarca	Cochabamba
22 Sept	30	39
23 Sept	28	44
24 Sept	31	54
25 Sept	35	54
26 Sept	55	41
27 Sept	83	34
28 Sept	126	38

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. Cochabamba leads here at 8.5%.

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: Catamarca reads 127 (unhealthy for sensitive groups) and Cochabamba reads 38 (good) right now.

Frequently asked

Catamarca and Cochabamba, answered

Which has more trees, Catamarca or Cochabamba?

Cochabamba, with roughly 26,704 trees inside its 2 km radius against 17,907. Tree cover tells a slightly different story from raw count: Cochabamba has the denser canopy at 8.5%.

Which has better air quality, Catamarca or Cochabamba?

Cochabamba right now, at AQI 38 against 127 — a gap of 89 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?

Catamarca needs about 92,049 more to reach its canopy target, and Cochabamba about 67,544. 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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