The world is approaching a dangerous climate milestone as global temperatures continue to rise. The United Nations has warned that the planet is likely to cross the critical 1.5°C global warming threshold within the next few years. This warning has increased pressure on governments to take stronger action against climate change.
The warning comes as world leaders, climate scientists and environmental organisations gather for the 31st United Nations Climate Change Conference (COP31) in Antalya, Türkiye, from November 9 to 20, 2026. The summit takes place at a time when extreme heat, rising sea levels, changing weather patterns and environmental damage are affecting communities across the world.
According to the United Nations Environment Programme (UNEP), global warming is expected to exceed 1.5°C under current conditions. However, limiting the extent of this temperature overshoot and eventually bringing global temperatures below the threshold remain possible through stronger climate action.
The 1.5°C target is an important part of the 2015 Paris Agreement, under which countries agreed to limit global warming to well below 2°C while pursuing efforts to keep the increase within 1.5°C compared with pre-industrial levels.
However, rising greenhouse gas emissions and continued dependence on fossil fuels have made this goal increasingly difficult to achieve.
A UNEP report published on September 2, 2026, titled Limiting Overshoot, indicates that the world is likely to cross the 1.5°C threshold within the next few years. Its best-case pathway estimates that temperatures could peak around 1.8°C above pre-industrial levels before declining.
Scientists warn that every additional fraction of a degree increases the risks of extreme weather, ecosystem damage and other climate-related problems.
The report highlights an important point: crossing the 1.5°C threshold does not mean that climate action has failed completely. Governments must continue reducing emissions and work towards bringing temperatures below the target as quickly as possible.
The effects of climate change are no longer limited to environmental damage. Rising temperatures are increasingly threatening human health and putting pressure on healthcare systems.
The 2026 Lancet Countdown report on Health and Climate Change has highlighted the growing number of deaths linked to extreme heat.
According to the report, heat was associated with an average of approximately 540,800 deaths annually between 2016 and 2023. Researchers estimated that climate change was responsible for around 369,900 of these deaths each year.
In 2023 alone, approximately 710,000 deaths worldwide were associated with heat exposure, with more than 70% attributed to human-caused climate change.
These findings have strengthened calls from health experts to recognise climate change as a global health emergency and improve protection for vulnerable communities.
One of the major concerns raised ahead of COP31 is the growing impact of extreme heat on pregnant women and newborn babies.
During the Pre-COP31 discussions in Fiji, United Nations Climate Change Executive Secretary Simon Stiell highlighted the serious health risks associated with rising temperatures.
Extreme heat during pregnancy has been linked to premature births, stillbirths, low birth weight and other complications affecting mothers and infants.
A survey involving healthcare professionals across five countries, including India, found that many doctors and midwives had witnessed health complications associated with extreme heat.
These concerns demonstrate that climate change is not only an environmental challenge but also a direct threat to public health, particularly for people who are more vulnerable to rising temperatures.
Small island nations in the Pacific are among the communities most exposed to the effects of climate change. Rising sea levels, coastal erosion, warmer oceans and coral reef damage are threatening their homes, livelihoods and natural resources.
During the Pre-COP31 meetings in October 2026, international leaders visited Tuvalu, a low-lying Pacific island nation facing serious climate risks.
According to Tuvalu's National Adaptation Plan, the country's islands have very low natural elevations, making them particularly vulnerable to rising sea levels and coastal flooding.
The country is also dealing with environmental challenges affecting its coastal ecosystems. Coral reefs are especially important because they support marine life, provide food and help protect coastlines from ocean waves.
Damage to these ecosystems can affect fishing communities, tourism and the natural protection available to island residents.
For countries like Tuvalu, climate change is not a distant possibility. It is already affecting daily life and increasing the need for urgent adaptation measures.
Climate finance was another major issue discussed during the Pre-COP31 meetings in Fiji.
Fiji's Minister for Information, Environment and Climate Change, Lynda Tabuya, highlighted how rising sea levels have personally affected her community.
She explained that approximately four metres of shoreline had been lost in her village of Tiliva on Kadavu Island because of rising sea levels. Some families have already been forced to move towards higher ground to protect themselves from coastal flooding.
She also highlighted the difficulties small communities face when trying to access international climate funding. Her village, which is not connected to the main electricity grid, took more than a decade to secure financial support for a solar energy system.
According to Tabuya, complicated procedures and lengthy approval processes often prevent vulnerable communities from receiving assistance when they need it most.
She called on developed countries and international financial institutions to make climate funding easier to access. She also supported greater use of grants instead of loans, arguing that vulnerable communities should not face additional debt while dealing with climate-related damage.
Her message highlighted the need to ensure that international climate commitments translate into practical support for people living on the frontlines of climate change.
COP31 is taking place at a crucial moment for international climate cooperation. Governments are under pressure to turn their existing promises into practical action and strengthen their responses to global warming.
Some of the major priorities include:
Reducing greenhouse gas emissions: Countries need to accelerate the transition away from fossil fuels and increase the use of renewable energy.
Strengthening climate finance: Developing countries and vulnerable communities need easier access to financial support.
Protecting oceans and ecosystems: Coral reefs, forests, wetlands and other natural resources require stronger conservation efforts.
Improving climate adaptation: Governments must prepare communities for heatwaves, floods, droughts and rising sea levels.
Protecting public health: Healthcare systems need better preparation to deal with heat-related illnesses and other climate risks.
The United Nations has also emphasised that clean energy technologies, including solar power, electric vehicles and battery storage, provide opportunities to reduce emissions and support a more sustainable future.
The warning about crossing the 1.5°C global warming threshold is a reminder that climate change is already affecting human lives, natural ecosystems and economies. Rising temperatures, heat-related deaths, coastal erosion and extreme weather events show how serious the situation has become.
The experiences of vulnerable Pacific island communities demonstrate that climate change is not just a scientific concern discussed at international conferences. It is a real challenge affecting homes, livelihoods, healthcare and future generations.
COP31 provides an important opportunity for world leaders to strengthen international cooperation, improve climate funding and accelerate the transition towards cleaner energy.
Although crossing the 1.5°C threshold is increasingly likely, it should not become a reason to abandon climate action. Every effort to reduce emissions, protect nature and support vulnerable communities can make a difference.
The responsibility now lies with governments, businesses and individuals to take meaningful steps towards a safer and more sustainable planet. The future of the environment depends not only on promises made at global summits but also on the actions taken today.