State of the Climate: A Dimming, Overheated Planet, With Degraded Oceans Global warming continues to reshape Earth’s climate, with 2025 marking the third consecutive year of record-high ocean temperatures. The 2025 State of the Climate report, released by the American Meteorological Society and led by scientists at the National Oceanic and Atmospheric Administration (NOAA), highlights alarming trends. The Greenland Ice Sheet lost approximately 129 gigatons of ice, equivalent to a cube measuring three miles on each side. Meanwhile, some northern forests and tundra emitted more carbon dioxide than they absorbed, exacerbating atmospheric CO2 levels. The report attributes these developments primarily to the continued combustion of fossil fuels, which has driven up greenhouse gas concentrations. In Europe, average temperatures rose by about 3.6 degrees Fahrenheit since the 1960s, with extreme high temperatures increasing by as much as 18 degrees Fahrenheit. These findings come amid heightened legal scrutiny, following an advisory opinion from the International Court of Justice that suggested nations might be liable for cross-border climate damage they knowingly cause or neglect to prevent. Climate scientist Jennifer Francis emphasized the gravity of the situation, stating that the report underscores humanity’s failure to curb climate warming and its associated impacts. She noted that the consequences include more frequent and severe heatwaves, flooding, droughts, and disruptions to ecosystems worldwide. The urgency of addressing these issues is underscored by the fact that many leaders continue to ignore warnings, despite broad public support for climate protection measures. The report also indicates that climate extremes impacting communities and economies show no signs of abatement. Alan Sealls, president of the American Meteorological Society, stressed that the rising intensity and persistence of such extremes should not be underestimated compared to historical norms. He urged individuals to take personal steps toward resilience and encouraged political representatives to safeguard their communities. In 2025, high humidity heat extremes occurred with near-record frequency and intensity, according to NOAA scientists Jessica Blunden and James Reagan. These conditions pose serious health risks, as high humidity impairs the body’s ability to cool itself, leading to potentially fatal heat-related illnesses. The report notes that when both temperature and humidity are high, the air becomes too thick for perspiration to evaporate, rendering the body’s natural cooling mechanism ineffective without external assistance. Meanwhile, the U.S. experienced its hottest July on record, with an average temperature of 76.89°F, surpassing the previous record set in 1936. This marks a 3.3°F increase from the 1901-2000 average. Every state in the contiguous U.S. recorded temperatures within the warmest third of their July records, with no state falling below average. Heat domes contributed to extreme heat events, and researchers confirm that climate change is making such events more common and more intense. Europe also faced severe heat, with the U.K. and France preparing for another heatwave. Temperatures in southern France approached 40°C, and the U.K. issued amber heat health alerts. Across the continent, persistent high-pressure systems trapped heat, contributing to major wildfires, prolonged drought, and new temperature records. Scientists warn that the combination of accelerated human-induced warming and a powerful El Niño event increases the likelihood that 2026 could become the hottest year on record. In the U.S., the heatwave affected nearly every region, with multiple states recording all-time high temperatures. Notable records included 109°F in Salt Lake City, 111°F in Billings, Montana, and 115°F in Miles City, Montana. Wildfires spread across the Pacific Northwest, forcing evacuations and destroying hundreds of structures. Flash flooding occurred in areas like the Texas Hill Country and eastern New York, despite overall drier conditions. Globally, July 2025 was the joint second warmest July on record, according to the World Meteorological Organization. The organization also predicted above-normal temperatures for the coming months, as El Niño conditions are expected to drive global temperatures to record highs. The WMO secretary-general, Celeste Saulo, highlighted the importance of proactive measures, noting that while forecasts are essential, they do not eliminate the need for preparedness and action.
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