Maritime transport CO2 emissions in Hong Kong (China)
Hong Kong (China): Maritime transport CO2 emissions was 5,669 Tonnes in 2025. ◆ Volatile
Maritime transport CO2 emissions in Hong Kong (China), 2019–2025
Source: Organisation for Economic Co-operation and Development. Measured in Tonnes.
Analysis
Hong Kong (China) recorded 5,669 Tonnes for maritime transport co2 emissions in 2025. That is the lowest value across all 7 years on record.
That represents a change of down 80.9% on the previous year and down 91.2% over ten years.
Hong Kong (China) ranks 121st of 138 countries on this measure, in the bottom quarter.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 64,679 Tonnes | 64,679 Tonnes | 64,679 Tonnes | 1 |
| 2020s | 66,671 Tonnes | 5,669 Tonnes | 141,486 Tonnes | 6 |
Countries ranked near Hong Kong (China)
More climate change data for Hong Kong (China)
- Share co2 vs population 0.0204 (2100)
- Urban population 100.0% (2025)
- Urban population 7.50 million (2025)
- Urban population growth -0.3% (2025)
- Population, total 7.50 million (2025)
- Population growth -0.3% (2025)
- Annual Net Emissions/Removals 40.31 (2024)
- Temperature change with respect to a baseline climatology 1.71 (2024)
- Per capita CO₂ emissions vs. per capita energy use 4.49 tonnes per person (2024)
- Co2 per capita marimekko 4.49 (2024)
Frequently asked questions
- What is maritime transport co2 emissions in Hong Kong (China)?
- Maritime transport co2 emissions in Hong Kong (China) was 5,669 Tonnes in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest maritime transport co2 emissions recorded in Hong Kong (China)?
- The highest recorded value was 141,486 Tonnes in 2022.
- What is the lowest maritime transport co2 emissions recorded in Hong Kong (China)?
- The lowest recorded value was 5,669 Tonnes in 2025.
- How does Hong Kong (China) rank for maritime transport co2 emissions?
- Hong Kong (China) ranks 121st out of 138 countries with data for 2025.
- Is maritime transport co2 emissions rising or falling in Hong Kong (China)?
- Over the last ten years it is down 91.2%. The long-run trend across the full record is volatile.
- Where does this Hong Kong (China) data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Maritime transport CO2 emissions (experimental). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 7 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This experimental dataset includes annual, quarterly, and monthly information on carbon dioxide (CO2) emissions from maritime transport based on ship-tracking information collected via Automatic Identification System (AIS) transponders, covering all large vessels (above 300 gross tonnage) around the world, accessed via the United Nations Global Platform, from 2019 onwards. The CO2 emissions are estimated by the OECD, based on a consistent methodology across countries and include emissions from both domestic and international voyages. The CO2 emissions are classified using the ship-type classification used by the International Maritime Organisation (IMO) distinguishing between 19 vessel categories such as bulk carriers, tankers, and cruise ships. The database provides a measure of CO2 emissions on a territory basis for domestic navigation, which is used for reporting in the UN Framework Convention on Climate Change (UNFCCC) inventories; and also on a residence basis, which is used to estimate the emissions of maritime transport (H50 in the International Standard Industrial Classification of All Economic Activities, or ISIC) in the SEEA Air Emission Accounts (AEAs). Seven components of these CO2 emissions measures can be selected from the ‘Vessel emissions ’ filter. In the tables, these are also shown with the letters A, B, C, D, E, F and G. The aggregate measures of CO2 emissions are calculated as: Domestic navigation = A + C International navigation (memo item) = D + G Air emissions accounts: maritime transport (ISIC H50) = A + B + D + E + F For residence based measures, the allocation of emissions to countries is based on the residence of the companies that operate the ships. More information can be found on the dataset webpage