Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Climate
Heat Index Calculator
Compute the 'feels-like' temperature when high air temperature is combined with humidity, using the National Weather Service Rothfusz regression. Use it to assess heat stress, plan outdoor activity, and trigger safety precautions in hot weather.
Fill in the required fields to see your result.
Climate
Climate Normal Calculator
Compute a climate anomaly as the standardised z-score of a current value against the 30-year average and standard deviation. Values outside ±2 indicate statistically unusual conditions.
Fill in the required fields to see your result.
Key differences
| Heat Index Calculator | Climate Normal Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 2 | 3 |
| Result | Heat Index (°F) | Climate Anomaly (standard deviations) |
| What it does | Compute the 'feels-like' temperature when high air temperature is combined with humidity, using the National Weather Service Rothfusz regression. Use it to assess heat stress, plan outdoor activity, and trigger safety precautions in hot weather. | Compute a climate anomaly as the standardised z-score of a current value against the 30-year average and standard deviation. Values outside ±2 indicate statistically unusual conditions. |