Temperature Comfort Index Calculator
Complete weather comfort calculator — calculate wind chill, heat index, dew point, and feels-like temperature. Assess safety risks and get clothing/hydration recommendations.
Step 1 of 2
How to Use This Calculator
- Select the Calculator Mode: comprehensive feels-like, wind chill only, heat index only, or dew point & humidity.
- Choose your Unit System (Imperial °F/mph, or Metric °C/km/h).
- Enter Temperature, Wind Speed, and Relative Humidity (%).
- Review the Feels Like temperature and the comfort or danger level classification for the current conditions.
How the result changes with Temperature
| Temperature | Feels Like (°F) |
|---|---|
| -41 | -66.8°F |
| 6.5 | -7.9°F |
| 64 | 64°F |
| 111 | 155.9°F |
What each input means
- Calculator Mode
- Calculation mode to use.
- Unit System
- Measurement system (imperial or metric).
- Temperature
- Air temperature
- Wind Speed
- Wind speed (mph or km/h)
- Relative Humidity
- Relative humidity as a percentage.
How this is calculated
Formula
Wind Chill = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16 | Heat Index = Rothfusz polynomial (T ≥ 80°F)Engine last updated . Checked against 4 independently-derived tests — how we verify calculators.
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