Definition of temperature–humidity index in English:

temperature–humidity index

noun

  • A measure indicating the level of discomfort the average person is thought to experience as a result of the combined effects of the temperature and humidity of the air.

    • ‘Always interested in the weather, I became intrigued about comfort indexes when I first read about the Temperature-Humidity Index (THI) developed for the US Weather Bureau.’
    • ‘From these data, the temperature-humidity index (THI) was calculated.’
    • ‘Although the thermometer may read 75 degrees Fahrenheit, the Temperature-Humidity Index makes it feel much hotter.’