Guam: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e)

Key figures

What the numbers say

In 2024, Guam's methane (CH4) emissions (total) excluding LULUCF (Mt CO2e) rose 0.8% on 2023 (from 0.01 to 0.01).

Across the 30 yearly changes before that (1994 to 2023), the average change was +0.5% and a typical year strayed about 0.5% from that (the standard deviation). This year's change was 0.8 standard deviations above that average, so it was an ordinary year: it sits within the range of normal year-to-year movement.

On record, the biggest yearly rise was 3.9% in 1983 and the biggest yearly fall was 23.4% in 1989. The numbers show how large and when, not why; for the cause, look at what happened in that country in those years.

From 2015 to 2024 the straight-line trend is upward, about 0.0000727 a year. A straight line explains 98% of the movement over 10 observed years.

Worked out from the yearly values above. How the checks work: standard deviation, z-scores and straight-line trends.

A straight-line projection, tested first

Extending that straight line gives about 0.01 for 2027. We show this only because the same method, fitted on earlier years, predicted 2022 to 2024 better than "no change" would have: its average miss was 0.0000809, against 0.0002 for assuming no change. Treat it as a continuation of the recent pattern, not a forecast of events: it cannot see a recession, a policy change or a revision to the data.

See how a linear trend forecast works and the guide on forecasting without fooling yourself.

How it compares

In 2024, Guam had the 196th highest value of the 203 economies reporting that year. Higher is not always better: for some indicators the lowest value is the one to aim for. See the full ranking.

Closest to Guam in the 2024 ranking

• Aruba — 193rd of 203: 0.02
• Virgin Islands (US) — 194th of 203: 0.02
• Gibraltar — 195th of 203: 0.02
• British Virgin Islands — 197th of 203: 0.01
• American Samoa — 198th of 203: 0.0067
• Turks and Caicos Islands — 199th of 203: 0.0042

What this measures

A measure of annual emissions of methane (CH4), one of the six Kyoto greenhouse gases (GHG), from the agriculture, energy, waste, and industrial sectors, excluding LULUCF. The measure is standardized to carbon dioxide equivalent values using the Global Warming Potential (GWP) factors of IPCC's 5th Assessment Report (AR5).

Limitations: Global GHG emissions are currently not directly measurable, but approaches for their estimation exist, and numerous sources exist to supply data for this indicator. Reputable scientific organizations produce these data for use for research, policy analysis, climate negotiations, and broader public communications. The estimated accuracy from fossil fuel combustion and industrial processes are quite high, as quantities of fossil fuels and other emissive materials (such as cement and steel) produced are well known. For these sectors, emissions estimates are roughly accurate to within 10% when aggregated to the global level and between 4% and 35% at the country level (Crippa et al., 2023).

Regional and income-group figures are computed by the World Bank as a sum.

All 55 values

Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e) in nearby economies

• American Samoa — 0.0067 (2024)
• Australia — 144.58 (2024)
• Brunei Darussalam — 1.8 (2024)
• Cambodia — 26.66 (2024)
• China — 1,485 (2024)
• Fiji — 0.8 (2024)
• French Polynesia — 0.07 (2024)
• Hong Kong SAR, China — 4.92 (2024)
• Indonesia — 429.54 (2024)

More environment data for Guam

• Rural population — 9,769 (2025)
• Rural population (% of total population) — 5.78% (2025)
• Urban population — 159,230 (2025)
• Urban population (% of total population) — 94.22% (2025)
• Aquaculture production (metric tons) — 64 (2024)
• Capture fisheries production (metric tons) — 45.64 (2024)
• Total fisheries production (metric tons) — 109.64 (2024)
• Rural population growth (annual %) — -0.08% (2025)
• Urban population growth (annual %) — 0.78% (2025)
• Agricultural land (sq. km) — 160 (2024)
• Agricultural land (% of land area)

Reading data like this

• Where to find free public data, and how to check it before you trust it — 2 min read
• Data analysis examples: 6 worked from one dataset — 3 min read
• Real change or random noise? A plain guide to reading your numbers — 2 min read

Questions people ask

What is Guam's methane (CH4) emissions (total) excluding LULUCF (Mt CO2e)?

0.01 in 2024, according to the World Bank (World Development Indicators).

How has it changed since 1970?

It is down 44.75% from 0.02 in 1970 (1.09% a year on average, compounded). The highest value was 0.02 in 1970 and the lowest 0.01 in 1990.

Source

World Bank, World Development Indicators, indicator EN.GHG.CH4.MT.CE.AR5, licensed CC BY 4.0. Original source: EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint Research Centre (JRC) - European Commission, uri: https://edgar.jrc.ec.europa.eu/dataset_ghg2024, publisher: JRC European Commission, date published: 2024; International Energy Agency (IEA), uri: https://edgar.j… Figures are fetched from the World Bank API and refreshed monthly; see the series on data.worldbank.org. The full definition and method are in the World Bank's metadata glossary. Comparisons use the same World Bank release.

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