Warming Overshoots Paris 1.5-Degree Target in 2026
Copernicus reports 2026 will almost certainly average above 1.5 degrees, with the overshoot already observed in October at 1.75 degrees.
Updated on Nov. 6, 2026 in Environmental
Live Poll
Do you think the country is on the right track on climate change?
Copernicus Climate Change Service reported that 2026 will almost certainly average more than 1.5 degrees Celsius above preindustrial levels, with October 2026 the warmest October on record globally at 1.75 degrees above preindustrial. This is a reported observational and projected finding, not a change in policy or a new technology.
Why it matters
Human activities have warmed the climate, and an exceptionally strong El Niño is adding further heat, so 2026 is tracking toward the second-warmest year since records began. The UN Environment Programme now expects global warming to overshoot the Paris Agreement's 1.5-degree target, which shifts the policy question from avoiding overshoot to managing it.
Copernicus data show October 2026 at 1.75 degrees Celsius above preindustrial levels, marking the third consecutive month above the 1.5-degree threshold. The figures are observed global surface temperatures, while the 2026 annual outlook is a probabilistic projection with a 20% chance of exceeding 2024.
The players
Copernicus Climate Change Service
The European Union's Earth observation program that publishes global temperature records and seasonal climate forecasts.
UN Environment Programme
The United Nations agency that coordinates environmental science assessments and warned that warming is expected to overshoot the Paris Agreement target.
Potsdam Institute for Climate Impact Research
A German research institute in Potsdam that studies climate impacts and tipping-point risks.
The details
Global average temperature is measured against a preindustrial baseline, the period before large-scale fossil fuel burning raised atmospheric greenhouse gas levels. Human-caused warming sets the baseline upward, and El Niño, a periodic warming of surface waters in the tropical Pacific, temporarily adds heat on top of it. Copernicus combines these observed temperatures with seasonal forecasts to estimate how the year will finish, which is why its outlook is expressed as a probability rather than a fixed number.
Timeline
2015: Paris Agreement adopted with a goal of limiting long-term warming to 1.5 degrees Celsius.
September 2026: UNEP report states that every additional fraction of a degree worsens risks and impacts.
October 2026: Warmest October on record, at 1.75 degrees above preindustrial levels.
November 6, 2026: Copernicus reports 2026 will likely average above 1.5 degrees.
Mid-century: UNEP scenario has warming peaking at 1.7 to 1.8 degrees Celsius.
The Tech Race
The 1.5-degree Paris target has become the reference point against which climate science and policy are measured, and UNEP's overshoot projection now frames the next phase of that effort. The race is less about a single technology than about whether emissions reductions can bring warming back toward 1.5 degrees by 2100, a return UNEP has set as its target year.
Sustained readings above 1.5 degrees raise the likelihood of more frequent extreme heat, which affects health, agriculture and energy demand in the places where it occurs. The extraction does not specify how these temperature patterns will translate into local conditions for any particular region.
The takeaway
The 2026 record is the kind of reading that will be checked against the 2024 benchmark, with Copernicus giving a 20% chance that 2026 surpasses it. Watch whether the four-year 2023 to 2026 average stays above 1.5 degrees, since that figure will show whether the overshoot is sustained rather than a single hot period.
What happens next
UNEP's scenario sets a target of returning warming to 1.5 degrees by 2100 and requires a 69% cut in emissions by 2040 relative to 2025, milestones that will be tested as annual temperature records are published.
Further reading
For broader context on how warming trends are tracked and what they mean for ecosystems and emissions policy, explore the Environmental section.
Source note: This article includes information reported by TEMPO.
Live Poll
Do you think the country is on the right track on climate change?
