UN report: the world can no longer avoid overshooting 1.5°C — what it would take to come back
The United Nations Environment Programme (UNEP) said on Wednesday, October 21, 2026, that the chance of holding global warming below 1.5°C with no or limited overshoot “is now gone”. Its annual Emissions Gap Report, the 17th edition, titled The Point of Return, shifts the focus from avoiding the threshold to limiting how far and how long the world passes it.
The key numbers
Global greenhouse gas emissions reached 58.4 billion tonnes of CO2 equivalent in 2025, according to the report, a decline of just 0.1 billion tonnes from 2024. Fossil-fuel CO2 still rose; the small overall dip came from lower emissions from land use.
On current policies, UNEP projects warming of about 2.8°C this century. Full delivery of national climate pledges would bring that to 2.6°C, and adding countries’ net-zero targets would bring it to about 2.1°C, according to coverage of the report. Even if every pledge were met, emissions would fall only 5–8% by 2030 and 11–15% by 2035.
The path back to 1.5°C
UNEP’s lowest-overshoot pathway requires global emissions to fall 18% by 2030, 45% by 2035 and 69% by 2040, compared with 2025 levels. On that path, warming would peak around 1.7–1.8°C near mid-century and return to 1.5°C or below by 2100, with roughly a 50% chance. That return depends on removing about 320 billion tonnes of CO2 from the atmosphere this century, a scale the report itself calls uncertain. Every five years of emissions at current levels adds about 0.1°C to peak warming.
The benchmarks are concrete: by 2035, at least triple renewable electricity capacity, cut coal power by at least 75% and methane by 25%; by 2040, effectively phase out coal power.
Who is moving and who is not
The report says 63 countries cut emissions over the past decade while 124 increased them. G20 members, about three-quarters of the global total, raised emissions by 0.7% in 2025, excluding land use. Among the six largest emitters, preliminary data show increases in the United States, China and Indonesia and declines in India, Russia and the European Union. AFP, cited by Nature World News, reported that the US had the largest increase of any country, about 133 million tonnes, which the report links to higher electricity demand and a coal rebound. A US statement included in the report says Washington does not endorse its analysis or conclusions.
“Overshoot is not surrender”
UN officials framed the finding as a call to act faster rather than give up, using the line “overshoot is not surrender”. Anne Olhoff of the UNEP-Copenhagen Climate Centre warned that the longer action is delayed, the greater the risk to the temperature goal itself.
Why it matters for Ecuador
The report lands as Ecuador’s coast faces record rain linked to El Niño, a natural climate pattern. The report does not attribute individual weather events to climate change, and this article does not either. But adaptation, from drainage to early warnings, is a central concern for countries like Ecuador in a warmer world.
Confirmed and pending
Confirmed: the report’s title, release date and headline figures as reported by UNEP and specialist outlets. Pending: how governments respond in new pledges at the next UN climate summit. UNEP’s own pages could not be loaded during our review, so figures were cross-checked across independent reports.
Featured image: illustrative photo by Chris LeBoutillier / Unsplash (Unsplash License).
Sources
- UNEP: Emissions Gap Report 2026
- Down To Earth: Emissions Gap Report 2026 (October 21, 2026)
- Nature World News: U.S. logged the biggest emissions jump in the G20 (October 22, 2026)
- Democracy Now! Headlines (October 22, 2026)
Dmitri Volkov · Science & Environment · Virtual editorial byline
Editorial direction: Leonidas Ferraz · October 22, 2026 · AI-assisted writing
