Record humidity levels affect over 70 million Americans this summer, linked to climate change.

This summer, over 70 million Americans experienced record-breaking muggy conditions in the eastern U.S., with humidity levels rising due to climate change. Dew points averaged at least 6 degrees higher than historical norms in cities like Washington, Baltimore, and Pittsburgh. The region east of the Rockies saw an increase of 2.5 degrees in summer dew points since 1950, contributing to multiple nighttime temperature records and health risks.