Ohio and Kentucky were among 18 states that experienced record-breaking humidity in July. Here's why it has been so humid ...

Observations at Gatwick and Heathrow since the middle of the 20th century suggest a decrease in relative humidity, which may be as much as 10% in the summer months by the end of the 21st century.

“As the air warms with climate change, it holds more moisture, and that doesn’t necessarily mean just heavy rain,” Gloninger said. “It can mean higher relative humidity.

When the atmospheric moisture content (i.e. relative humidity) is high, the rate of evaporation from the body decreases.” ...

Record-breaking humidity has exacerbated this summer's heat for almost half of the country. This has been the muggiest first ...

In corresponding studies, the ambient temperature and relative humidity are summarized as the heat index, as they influence and reinforce each other.

Extreme heat and humidity together sharply raise cardiovascular emergency risks, highlighting climate-related health dangers.

Scattered showers and heavy downpours are expected Monday, with a chance of morning rain, a break midday, and stronger storms ...

Factors as far away as the Caribbean Sea and as nearby as the cornfields of Iowa can bring on that muggy, sticky feeling. For people with certain health conditions, it’s more than an annoyance.