Hong Kong vs Singapore: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per

Hong Kong
0.0046 Mt CO2e per square kilometre
in 2023
Singapore
0.0063 Mt CO2e per square kilometre
in 2023
Hong Kong rank
3rd
Singapore rank
2nd

Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per over time

  • Hong Kong
  • Singapore
00.0020.0040.006197019962023

How they compare

Singapore currently reports 0.0063 Mt CO2e per square kilometre against 0.0046 Mt CO2e per square kilometre in Hong Kong, a difference of 0.0017 Mt CO2e per square kilometre.

That makes Singapore's figure about 1.4 times Hong Kong's.

The two have swapped places 1 time across 54 shared years of data; in 1970 it was Hong Kong ahead.

Hong Kong ranks 3rd and Singapore ranks 2nd of 203 countries.

Across the 6 decades both report, Hong Kong averaged higher in 3 and Singapore in 3.

Head to head by decade

Decade Hong Kong Singapore Difference Ahead
1970s 0.0021 Mt CO2e per square kilometre 0.0011 Mt CO2e per square kilometre 0.001 Mt CO2e per square kilometre Hong Kong
1980s 0.0028 Mt CO2e per square kilometre 0.0015 Mt CO2e per square kilometre 0.0013 Mt CO2e per square kilometre Hong Kong
1990s 0.0035 Mt CO2e per square kilometre 0.0024 Mt CO2e per square kilometre 0.0011 Mt CO2e per square kilometre Hong Kong
2000s 0.0038 Mt CO2e per square kilometre 0.0039 Mt CO2e per square kilometre 0.0001 Mt CO2e per square kilometre Singapore
2010s 0.0042 Mt CO2e per square kilometre 0.0059 Mt CO2e per square kilometre 0.0017 Mt CO2e per square kilometre Singapore
2020s 0.0046 Mt CO2e per square kilometre 0.0063 Mt CO2e per square kilometre 0.0018 Mt CO2e per square kilometre Singapore

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions (total) excluding lulucf (mt co2e), per, Hong Kong or Singapore?
Singapore, at 0.0063 Mt CO2e per square kilometre against 0.0046 Mt CO2e per square kilometre in Hong Kong as of 2023.
What is the difference in methane (ch4) emissions (total) excluding lulucf (mt co2e), per between Hong Kong and Singapore?
0.0017 Mt CO2e per square kilometre, with Singapore ahead.
How many years of comparable data are there for Hong Kong and Singapore?
54 years are reported by both, from 1970 to 2023.
How do Hong Kong and Singapore rank globally for methane (ch4) emissions (total) excluding lulucf (mt co2e), per?
Hong Kong ranks 3rd and Singapore ranks 2nd of 203 countries.
Where does this data come from?
Statizoid (derived), published as Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Hong Kong vs Singapore: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-total-excluding-lulucf-mt-co2e-per-square-kilometre/hong-kong-sar-china/singapore/

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About this data

Indicator
Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per square kilometre
Unit
Mt CO2e per square kilometre
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
250 places, 12,804 data points, 1970–2023
Last refreshed

Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e) 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.