UNEP Warns World Is on Track for 2.8°C Warming as the 1.5°C Climate Goal Slips Further Away

Global efforts to control climate change remain far short of what is required to meet the Paris Agreement’s most ambitious temperature goal. In its latest Emissions Gap Report, released in October 2026, the United Nations Environment Programme (UNEP) warns that the world is approaching a period of sustained warming beyond 1.5°C above pre-industrial levels.The report, titled The Point of Return, assesses the gap between the emissions reductions needed to limit warming and the action governments are currently taking. Its findings indicate that existing policies are insufficient to prevent substantially higher temperatures over the coming decades.Under current policies, global temperatures could rise by approximately 2.8°C by 2100. If countries fully implement their Nationally Determined Contributions (NDCs)—the climate action plans submitted under the Paris Agreement—the projection falls to around 2.6°C.Even the most optimistic scenario assessed by UNEP, in which existing pledges and additional net-zero targets are achieved, limits warming to approximately 2.1°C this century. These projections show how far the world remains from its internationally agreed climate objectives.

Why the 1.5°C Target Is at Risk

The Paris Agreement seeks to hold the increase in global average temperature to well below 2°C and pursue efforts to limit it to 1.5°C.That lower threshold matters because climate risks increase with every additional fraction of a degree. Higher temperatures intensify heatwaves and increase risks associated with drought, heavy rainfall, rising sea levels and damage to ecosystems.UNEP’s latest assessment concludes that avoiding an overshoot of 1.5°C is no longer achievable. However, this does not mean the threshold has permanently become irrelevant.The report examines a pathway in which warming peaks at approximately 1.7–1.8°C around the middle of the century before declining to 1.5°C or below by 2100. UNEP estimates roughly a 50% chance of achieving this outcome under the scenario it assesses.This pathway would require much faster emissions reductions than countries currently plan to deliver, alongside substantial removal of carbon dioxide from the atmosphere.

The Emissions Cuts Required Are Substantial

UNEP’s assessment sets out the scale of reductions needed to pursue the lowest possible overshoot scenario. Compared with 2025 levels, global greenhouse gas emissions would need to fall by:

• 18% by 2030
• 45% by 2035
• 69% by 2040

These reductions would require rapid changes across electricity generation, transport, industry, buildings and land use. Governments would need to accelerate renewable energy deployment, improve energy efficiency, reduce reliance on fossil fuels and cut methane emissions.The gap between these requirements and current commitments remains considerable. UNEP estimates that implementing existing national climate pledges would reduce emissions by only 5–8% by 2030 and 11–15% by 2035, relative to 2025 levels.The findings underline that announcing climate targets is not enough. Governments must translate commitments into measurable reductions in actual emissions.

Carbon Removal Could Become Increasingly Important

Reducing emissions remains the central requirement for limiting global warming, but UNEP’s lowest-overshoot pathway also depends on removing carbon dioxide already present in the atmosphere.The report estimates that returning to 1.5°C by 2100 under this scenario would require removing and permanently storing approximately 320 gigatonnes of carbon dioxide over the course of the century.Potential approaches include restoring forests and ecosystems, increasing carbon storage in soils, and developing technologies that capture carbon dioxide directly from the air. Each approach has different costs, limitations and environmental implications.Large-scale carbon removal is not a substitute for cutting emissions at their source. Many methods face challenges involving energy requirements, land availability, cost, permanence and the speed at which they can be deployed.The scale of removal envisaged by UNEP illustrates how delaying emissions reductions could make the eventual task more difficult and dependent on technologies that remain challenging to deploy at global scale.

Renewable Energy Offers a Route to Faster Action

Despite the projections, UNEP does not describe the situation as hopeless. The report points to progress already made through renewable energy expansion and climate policies that have reduced emissions in some countries and sectors.Solar and wind power have expanded rapidly, while improvements in energy efficiency and efforts to reduce methane emissions offer additional opportunities. Scaling up successful policies could help narrow the gap between existing commitments and the reductions required.The report also highlights the importance of reducing the share of coal, oil and gas in the global energy supply. Achieving this transition would require investment in clean electricity, energy storage, electricity networks and technologies that can reduce emissions from industrial processes.The challenge is not simply to develop cleaner technologies, but to deploy them quickly enough to change the global emissions trajectory.

Why Every Fraction of a Degree Matters

A temporary overshoot of 1.5°C would still carry significant consequences. The longer global temperatures remain elevated, the greater the pressure on ecosystems, food and water systems, infrastructure and communities exposed to climate hazards.Returning temperatures to 1.5°C later in the century would not necessarily reverse all damage caused during the period of higher warming. Some impacts, including certain ecosystem losses and long-term sea-level rise, may persist.For this reason, limiting the magnitude and duration of the overshoot remains important even if the original temperature threshold is exceeded.UNEP’s message is that the world’s remaining choices still matter. Faster emissions cuts could reduce peak warming, lower climate risks and reduce dependence on large-scale carbon removal.The report presents a narrow but consequential window for action. The outcome will depend on whether governments move beyond existing commitments and implement reductions at the speed required by the science.

FAQs

1. What does UNEP’s 2026 report predict for global warming?

Under current policies, warming could reach approximately 2.8°C above pre-industrial levels by 2100. Full implementation of existing national climate pledges would lower the projection to around 2.6°C.

2. Is the 1.5°C climate target impossible now?

Avoiding an overshoot of 1.5°C is no longer considered achievable in UNEP’s latest assessment. However, the report describes a pathway that could return global temperatures to 1.5°C or below by 2100 after a temporary overshoot.

3. How much must emissions fall by 2040?

For the lowest possible 1.5°C overshoot pathway, global greenhouse gas emissions would need to fall by 69% from 2025 levels by 2040.

4. Can carbon removal bring global temperatures down?

Removing and permanently storing carbon dioxide can help reduce atmospheric concentrations over time. However, large-scale carbon removal has significant technical, financial and environmental challenges and cannot replace rapid emissions reductions.

5. What can still be done to limit climate change?

Governments can accelerate renewable energy deployment, improve energy efficiency, reduce fossil fuel use, cut methane emissions and strengthen climate policies. Faster action could limit peak warming and reduce the magnitude and duration of a temporary overshoot.