As heat set in across the West from what could be a record-breaking heatwave, some flights at Las Vegas' airport were canceled due to high temperatures Friday.

"It's always hot, but it's not always this hot," said Clay Morgan, meteorologist at the National Weather Service in Las Vegas, who called the heat unusual and approaching all-time records.

The city could match an all-time record high of 117 degrees this weekend, he said. That's only happened four times, most recently in 2017.