UN weather agency confirms hottest decade on record

Summary

The UN weather agency confirms that the years 2015-2025 are the hottest on record, with 2025 ranking second or third and 2024 being the hottest year ever at about 1.55°C above pre-industrial levels.

Key Points
  • The period from 2015 to 2025 is the hottest decade on record since 1850.
  • 2025 ranks as either the second or third hottest year, at approximately 1.43 degrees Celsius above pre-industrial levels.
  • Glacier mass loss is among the worst recorded, with notable declines in Iceland and North America.
  • UN Secretary-General Antonio Guterres declared the global climate situation a state of emergency.
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