Humidity Amplifies Heat Waves, Worsening the Impact

Climate change is causing heat waves to become more intense, frequent, and longer-lasting. In addition, some regions are experiencing increased humidity, which exacerbates the discomfort and health risks associated with high temperatures. Warmer temperatures allow the atmosphere to hold more water vapor, leading to a feedback loop where more warming causes more evaporation, which in turn causes more warming. Coastal regions are particularly affected, as warmer ocean temperatures contribute to higher humidity levels. The combination of heat and humidity is making heat waves more oppressive, especially in areas near the ocean.