Note: Single-source report; awaiting corroboration.
The planet is experiencing record heat waves, deadly flooding, and extreme weather events as it nears a critical temperature limit, according to a United Nations Environment Programme (UNEP) report published on 2 September 2026. The report states the world is on track to breach the 1.5°C global warming threshold set in the 2015 Paris Agreement within the next few years, which scientists say is vital to avoid the worst effects of climate change.
UN Secretary-General António Guterres emphasized that surpassing the 1.5°C limit is a fight for humanity, with every fraction of a degree rise expected to cause loss of life, threaten livelihoods, intensify inequality, and push ecosystems towards irreversible harm. UNEP Executive Director Inger Andersen noted that extreme heat waves are already having more frequent and severe impacts worldwide.
The report calls for rapid and collective global action to reduce greenhouse gas emissions. Key steps include accelerating the phaseout of fossil fuels, cutting methane pollution, protecting land, forests, and oceans, and advancing renewable energy alternatives. These actions aim to keep any exceedance of the 1.5°C limit as limited and brief as possible.
According to Guterres, while the current trajectory is concerning, swift and ambitious climate action can bring global warming back below the 1.5°C threshold by the end of the century. He stressed that an "overshoot of ambition" is necessary to limit how high temperatures rise and how long they remain above this critical target.