"Is it ever hot today!"

• Relieved cry
• Expression of relief
• Sigh sound
• ''That was close!''
• "Coulda been a lot worse!"
• "Dodged a bullet there!"
• Hot-weather word
• "It's hot!"

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
interjection EXAMPLES FROM OTHER ENTRIES ▪ Phew ! I am so glad it's Friday.

Wiktionary Word definitions in Wiktionary
interj. Used to show relief, fatigue, surprise, or disgust.