Published on March 19, 2025, the WMO’s State of the Global Climate report confirmed that 2024 was likely the first calendar year to be more than 1.5°C above the pre-industrial era, with a global mean near-surface temperature of 1.55 ± 0.13 °C above the 1850-1900 average. This is the warmest year in the 175-year observational record.
WMO’s flagship report showed that:
- Atmospheric concentrations of carbon dioxide have been at the highest levels in the last 800,000 years.
- Globally each of the past ten years were individually the ten warmest years on record.
- Each of the past eight years has set a new record for ocean heat content.
- The 18 lowest Arctic sea-ice extents on record were all in the past 18 years.
- The three lowest Antarctic ice extents were in the past three years.
- The largest three-year loss of glacier mass on record occurred in the past three years.
- The rate of sea level rise has doubled since satellite measurements began.
Find out the report here.
