Nearly half of the U.S. population experienced record heat and humidity in June and July of 2025. Ohio University Professor ...

NORFOLK, Va. — Most summer days, you hear us talk about “humidity” when describing how the air feels. While many people are familiar with the term relative humidity — the percentage of water vapor in ...

More than 70 million Americans sweated through the muggiest first two months of summer on record as climate change has noticeably dialed up the Eastern United States’ humidity in recent decades, an ...

The Chicago area is bracing for extreme heat and humidity in the coming days, and experts said it could become more common with changing weather patterns. A Chicago doctor said extreme humidity ...

Heat and humidity will once again smother the eastern half of the country this week, pushing the heat index to dangerous levels for tens of millions of people. In the Midwest, the humidity will be ...