The data’s in for 2025. It was yet another year of back-to-back billion-dollar weather and climate disasters in the U.S.

Rising levels of carbon pollution have been causing summers to heat up for decades. The season has warmed since 1970 in 97% of 242 U.S. cities analyzed by Climate Central. And summers will only become ...

Levels of planet-warming CO2 in the atmosphere surged in 2024, growing at the fastest annual rate on record. As heat-trapping pollution continues to warm the planet, summer temperatures are arriving ...

Unseasonably high temperatures have swept across South Korea and Japan, contributing to dangerous wildfire conditions from March 21, 2025, to March 26, 2025. Human-caused climate change has ...

Click the downloadable graphic: Local Extremely Hot Summer Days at CSI 2 or Higher Levels of planet-warming CO2 in the atmosphere surged in 2024, growing at the fastest annual rate on record. The ...

Oceans made warmer by human-caused climate change are fueling more intense hurricanes in the Atlantic. In our warming climate, these storms also bring heavier rainfall and higher storm surge when they ...

Daily average temperatures reached Climate Shift Index (CSI) levels of 5 in central Canada from May 26 to May 29, 2025. A CSI level 5 indicates that human-caused climate change made this heat at least ...

As our climate warms, summer is heating up across the U.S. Summer warming isn’t all about scorching days — it’s also about sweltering nights. When nights don’t cool off enough relative to peak daytime ...