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Wednesday, October 21, 2026

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Climate · Wednesday, October 21, 2026

UN says emissions must fall 18 percent by 2030

The File desk · Oct. 21, 2026, 6:40 a.m. ET

Confirmed1 primary sources

Status

Confirmed from the UN Environment Programme press release datelined Nairobi, Oct. 21, 2026, and re-opened for this edition. The figures are the agency's scenario, not a measurement of a single country's latest year.
  • Confirmed
    UNEP says global greenhouse-gas emissions would have to fall 18 percent by 2030, from 2025 levels, on its lowest path back toward 1.5 degrees.
  • Confirmed
    The agency says the warming outlook is worse than last year because the United States withdrew from the and because historical estimates were revised.
A United Nations environment report published Wednesday says global greenhouse-gas emissions would have to fall 18 percent by 2030, from 2025 levels, to get onto the agency's lowest path back toward 1.5 degrees of warming. The report says the outlook is worse than last year in part because the United States withdrew from the .1
Secretary-General António Guterres, in a message the release quotes, said cutting emissions 18 percent by 2030 and 45 percent by 2035, compared with 2025, is what the report shows it will take. This story does not use a separate news description of U.S. emissions that was not in the UNEP release.
Why it matters (Estimate). Estimate. The agency, not this desk, names U.S. withdrawal from the as one reason the world's warming outlook got worse this year. For a reader, the practical line is the size of the cut UNEP says is required: 18 percent worldwide by 2030, against a much smaller cut if countries only do what they have already promised.1
The UN Environment Programme release is datelined Nairobi, Oct. 21. It says emissions would also have to fall 45 percent by 2035 and 69 percent by 2040, relative to 2025, for that same path. If current policies continue, it says, warming could reach 2.8 degrees within this century. UNEP says those outcomes “are worse than last year's projections due to the withdrawal of the United States of America from the and revised estimates of historical emissions.” That sentence is the agency's.1
How we know

Notes

  1. 1.UN Environment Programme, “New UNEP report lays out emission cuts needed for return to 1.5°C,” Nairobi, 21 October 2026. Re-opened for this edition. https://www.unep.org/news-and-stories/press-release/new-unep-report-lays-out-emission-cuts-needed-return-15degc “global greenhouse gas (GHG) emissions would have to be reduced by 18 per cent by 2030, 45 per cent by 2035 and 69 per cent by 2040, all relative to 2025 levels.” “if current policies continue, warming could reach 2.8°C within this century.” “These outcomes are worse than last year's projections due to the withdrawal of the United States of America from the and revised estimates of historical emissions.” António Guterres is quoted in the release on the 18 percent and 45 percent cuts. A news phrasing about an increase in U.S. climate pollution is not in this release and is not used. The release's photograph is credited to Samuel Faber/Pixabay and is not used.

What is still unknown or disputed

  • A country-by-country table was not pulled from the full report. This story uses the press release.
  • A separate description of U.S. emissions that was not in the UNEP release is not printed.

Primary sources

Every claim in this story is drawn from the documents below. If a fetch failed, that is recorded on the card.

  1. Source 1

    New UNEP report lays out emission cuts needed for return to 1.5°C

    UN Environment Programme · October 21, 2026

    Global greenhouse gas emissions would have to be reduced by 18 per cent by 2030, relative to 2025 levels. Outcomes are worse than last year's projections due to the withdrawal of the United States from the .

    https://www.unep.org/news-and-stories/press-release/new-unep-report-lays-out-emission-cuts-needed-return-15degc

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