More than 70 million Americans have experienced the muggiest start to summer on record, with climate change increasing humidity in the Eastern U.S. An Associated Press analysis shows that parts of 20 states and Washington, D.C., have had record days with uncomfortable dew points in June and July. Philadelphia, Washington, and Baltimore have seen oppressive humidity levels. The summer of 2025 has dew points averaging 6 degrees higher than late 20th-century norms in several cities. Experts say climate change and recent rain events are contributing to these extreme humidity levels, affecting areas not accustomed to such conditions.
Feel sticky this summer? That’s because it’s been record muggy East of the Rockies
