Macau vs Tsing Yi Town
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.
Tsing Yi Town has more tree cover — 54.5% against 15.5%.
Macau has cleaner air right now — AQI 67 against 88.
- Tree cover gap
- 39.0 points
- Tsing Yi Town is ahead.
- Air quality gap
- 21 AQI
- Macau is cleaner.
- Trees between them
- 96.1K
- Tsing Yi Town has more standing.
Macao
Hong Kong
Tree cover
Share of the 2 km radius under canopy.
15.5%
54.5%
Air quality index
US EPA index, live, with its band. Lower is better.
67 · Moderate
88 · Moderate
Trees standing
Estimated from the measured canopy area.
38.1K
134K
Trees still needed
To reach the same canopy target. Fewer is better.
35.7K
0
CO₂ absorbed each year
By the trees already standing.
839K kg
3.0M 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. Tsing Yi Town is read from nearby ground stations and Macau is modelled — worth knowing, since the two are not quite like for like.
PM2.5
Fine particles, the pollutant that usually sets the index.
15.5 µg/m³
29.5 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 | Macau | Tsing Yi Town |
|---|---|---|
| 22 Sept | 125 | 127 |
| 23 Sept | 126 | 105 |
| 24 Sept | 99 | 94 |
| 25 Sept | 89 | 99 |
| 26 Sept | 83 | 102 |
| 27 Sept | 64 | 69 |
| 28 Sept | 42 | 53 |
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. Tsing Yi Town leads here at 54.5%.
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: Macau reads 67 (moderate) and Tsing Yi Town reads 88 (moderate) right now.
Frequently asked
Macau and Tsing Yi Town, answered
Which has more trees, Macau or Tsing Yi Town?
Tsing Yi Town, with roughly 134,234 trees inside its 2 km radius against 38,128. Tree cover tells a slightly different story from raw count: Tsing Yi Town has the denser canopy at 54.5%.
Which has better air quality, Macau or Tsing Yi Town?
Macau right now, at AQI 67 against 88 — a gap of 21 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?
Macau needs about 35,668 more to reach its canopy target, and Tsing Yi Town 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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