Chon Buri vs Samut Prakan
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.
Samut Prakan has more tree cover — 34.9% against 24.7%.
Samut Prakan has cleaner air right now — AQI 13 against 26.
- Tree cover gap
- 10.2 points
- Samut Prakan is ahead.
- Air quality gap
- 13 AQI
- Samut Prakan is cleaner.
- Trees between them
- 24.9K
- Samut Prakan has more standing.
Thailand
Thailand
Tree cover
Share of the 2 km radius under canopy.
24.7%
34.9%
Air quality index
US EPA index, live, with its band. Lower is better.
26 · Good
13 · Good
Trees standing
Estimated from the measured canopy area.
60.1K
85.0K
Trees still needed
To reach the same canopy target. Fewer is better.
12.9K
0
CO₂ absorbed each year
By the trees already standing.
1.3M kg
1.9M 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 read from nearby ground stations.
PM2.5
Fine particles, the pollutant that usually sets the index.
6.2 µg/m³
3.2 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 | Chon Buri | Samut Prakan |
|---|---|---|
| 22 Sept | 70 | 66 |
| 23 Sept | 95 | 92 |
| 24 Sept | 64 | 68 |
| 25 Sept | 29 | 28 |
| 26 Sept | 22 | 20 |
| 27 Sept | 22 | 21 |
| 28 Sept | 28 | 25 |
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. Samut Prakan leads here at 34.9%.
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: Chon Buri reads 26 (good) and Samut Prakan reads 13 (good) right now.
Frequently asked
Chon Buri and Samut Prakan, answered
Which has more trees, Chon Buri or Samut Prakan?
Samut Prakan, with roughly 84,972 trees inside its 2 km radius against 60,060. Tree cover tells a slightly different story from raw count: Samut Prakan has the denser canopy at 34.9%.
Which has better air quality, Chon Buri or Samut Prakan?
Samut Prakan right now, at AQI 13 against 26 — a gap of 13 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?
Chon Buri needs about 12,887 more to reach its canopy target, and Samut Prakan 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.
Keep going
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