Silom satellite images 2017–2025: how it changed
9 yearly Sentinel-2 images of Silom, Bangkok, from 27 Jan 2017 to 15 Jan 2025. Green cover in true colour moved from 26% to 23% (-3 percentage points) across a 5 × 5 km box.
Before and after
20172025Drag the divider or use the arrow keys.
Year by year
27 Jan 2017 · cloud 1% · green 26% 
17 Jan 2018 · cloud 12% · green 31% 
27 Jan 2019 · cloud 7% · green 32% 
21 Feb 2020 · cloud 0% · green 18% 
5 Feb 2021 · cloud 0% · green 19% 
12 Dec 2021 · cloud 0% · green 23% 
21 Apr 2023 · cloud 0% · green 22% 
30 Apr 2024 · cloud 1% · green 18% 15 Jan 2025 · cloud 0% · green 23%
Yearly facts
| Year | Acquired | Cloud cover | Green cover | Valid pixels |
|---|---|---|---|---|
| 2017 | 27 Jan 2017 | 1% | 26% | 100% |
| 2018 | 17 Jan 2018 | 12% | 31% | 100% |
| 2019 | 27 Jan 2019 | 7% | 32% | 100% |
| 2020 | 21 Feb 2020 | 0% | 18% | 100% |
| 2021 | 5 Feb 2021 | 0% | 19% | 100% |
| 2022 | 12 Dec 2021 | 0% | 23% | 100% |
| 2023 | 21 Apr 2023 | 0% | 22% | 100% |
| 2024 | 30 Apr 2024 | 1% | 18% | 100% |
| 2025 | 15 Jan 2025 | 0% | 23% | 100% |
Method and limits
- Sentinel-2 true colour at 10 m per pixel, so single houses are not visible.
- One clear dry-season acquisition per year; seasons and sun angle still differ slightly between years.
- Green cover is an RGB approximation of green-dominant pixels, not NDVI.
- Clouds, haze and shadows can remain in a scene even after selection.
Contains modified Copernicus Sentinel data, processed by MapScale.
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