As of 2025, the World Meteorological Organization estimates the global average surface temperature has increased by about 1.3 degrees Celsius since the late 1800s.
November 19, 2025
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temporal
Baseline global warming since preindustrial period
The World Meteorological Organization's 2024 State of the Global Climate report found that global temperatures, greenhouse gas concentrations, and sea levels reached record highs in 2024 and concluded that some climate-change impacts are accelerating and will be irreversible for centuries.
January 01, 2024
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temporal
Annual global climate assessment summarizing key indicators and trends.