• Overview
    • Chemistry
    • Earth Science
      • Atmospheric Science
      • Climate
      • Environmental Science
      • Geology
      • Meteorology
        • Moisture & Evaporation
          • Absolute Humidity Calculator
          • Adiabatic Mixing of Moist Air Streams Calculator
          • Cooling Moist Air Calculator
          • Dew Point Temperature of Air Calculator
          • Equivalent Evaporation Calculator
          • Heat Index Calculator
          • Humidex Calculator
          • Humidity Ratio Calculator
          • Moisture Content of Moist Air Calculator
          • Penman–Monteith Method Calculator
          • Relative Humidity of Air Calculator
          • Temperature‐Humidity Index Calculator
          • Wet‐Bulb Globe Temperature Calculator
          • Wet‐Bulb Temperature Calculator
        • Weather
      • Oceanography
    • Engineering
    • Everyday Life
    • Finance
    • Health & Medicine
    • Life Sciences
    • Mathematics
    • Physics
    • Society & Culture
    • Space
    • Technological World
    • Units
WolframAlpha

Temperature‐Humidity Index Calculator

Solve for the temperature‐humidity index (THI), an index of discomfort and heat stress risk.

dry‐bulb temperature:
wet‐bulb temperature:
Assuming wet-bulb temperature | Use instead
  • Pro
  • Mobile Apps
  • Products
  • Business
  • API & Developer Solutions
  • LLM Solutions
  • Resources & Tools
  • About
  • Contact
  • Connect
  • ©2026 Wolfram
  • Terms
  • Privacy
  • wolfram.com
  • Wolfram Language
  • Mathematica
  • Wolfram Demonstrations
  • Wolfram for Education
  • MathWorld