Extreme temperatures present a significant challenge to AC systems, which engineers and installers say are really only designed to keep indoor temperatures about 20 degrees cooler than outside.
Fifteen cities in Italy, most of them in the country's center and south, were under heat advisories. Czech temperatures soared to a new record high. European countries father north also sweltered.
Parts of the Midwest are seeing unhealthy air quality this weekend, including Minnesota, Wisconsin, Montana and the Dakotas. It can be most dangerous for kids, older people and other sensitive groups.
Nearly a third of Americans were under extreme heat advisories, watches and warnings. In Nevada, Arizona and California, desert temperatures could soar, in parts, past 120 F.
More than 111 million people across the U.S. remain under weather advisories or warnings as forecasters say an oppressive heat wave might get worse before it gets any better.
A Burlington-area man says his small organic farm sustained $350,000-$400,000 in crop damages alone — and was canoeing through his fields after heavy rains earlier this week.
A tornado touched down Wednesday evening near Chicago's O'Hare International Airport, prompting passengers to take shelter and disrupting hundreds of flights. There were no reports of injuries.
You can still enjoy the outdoors this summer despite the scorching weather, if you're smart about it. Here's what to watch out for and how to stay safe.
The National Weather Service said heavy rains across New England would subside Tuesday, but officials warned that flooding still presented a danger to residents.
Over the last century, we've seen a huge improvement in the accuracy of weather forecasts. A new study suggests these better forecasts have tremendous value for our lives and our economy.
President Biden approved Vermont's emergency declaration Tuesday morning as rescue teams in that state braced for more rain and flooding from a storm that left a trail of damage across the Northeast.