Hong Kong vs Singapore: emissions of air pollutants, per square kilometre
Hong Kong
113.54 tonnes per square kilometre
in 2022
Singapore
334.22 tonnes per square kilometre
in 2022
Hong Kong rank
8th
Singapore rank
5th
emissions of air pollutants, per square kilometre over time
- Hong Kong
- Singapore
How they compare
Singapore currently reports 334.22 tonnes per square kilometre against 113.54 tonnes per square kilometre in Hong Kong, a difference of 220.68 tonnes per square kilometre.
That makes Singapore's figure about 2.9 times Hong Kong's.
The two have swapped places 2 times across 62 shared years of data; in 1961 it was Singapore ahead.
Hong Kong ranks 8th and Singapore ranks 5th of 207 countries.
Across the 7 decades both report, Hong Kong averaged higher in 1 and Singapore in 6.
Head to head by decade
| Decade | Hong Kong | Singapore | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 26.4 tonnes per square kilometre | 22.87 tonnes per square kilometre | 3.53 tonnes per square kilometre | Hong Kong |
| 1970s | 30.56 tonnes per square kilometre | 89.65 tonnes per square kilometre | 59.09 tonnes per square kilometre | Singapore |
| 1980s | 59.7 tonnes per square kilometre | 141.63 tonnes per square kilometre | 81.93 tonnes per square kilometre | Singapore |
| 1990s | 92.02 tonnes per square kilometre | 206.9 tonnes per square kilometre | 114.89 tonnes per square kilometre | Singapore |
| 2000s | 132.07 tonnes per square kilometre | 301.81 tonnes per square kilometre | 169.74 tonnes per square kilometre | Singapore |
| 2010s | 122.61 tonnes per square kilometre | 364.38 tonnes per square kilometre | 241.77 tonnes per square kilometre | Singapore |
| 2020s | 119.26 tonnes per square kilometre | 331.76 tonnes per square kilometre | 212.5 tonnes per square kilometre | Singapore |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher emissions of air pollutants, per square kilometre, Hong Kong or Singapore?
- Singapore, at 334.22 tonnes per square kilometre against 113.54 tonnes per square kilometre in Hong Kong as of 2022.
- What is the difference in emissions of air pollutants, per square kilometre between Hong Kong and Singapore?
- 220.68 tonnes per square kilometre, with Singapore ahead.
- How many years of comparable data are there for Hong Kong and Singapore?
- 62 years are reported by both, from 1961 to 2022.
- How do Hong Kong and Singapore rank globally for emissions of air pollutants, per square kilometre?
- Hong Kong ranks 8th and Singapore ranks 5th of 207 countries.
- Where does this data come from?
- Statizoid (derived), published as emissions of air pollutants, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
emissions of air pollutants divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.