formula-based apparent temperature index
Wind chill is a human heat-loss index calculated from air temperature and wind speed.
Converter
formula-based apparent temperature index
heat index
reference-only
- Record
- M657
- Definition quality
- Documented range
- Conversion mode
- reference only
- Calculator
- Requires named inputs
Definition
Heat index combines air temperature and RH as apparent temperature using NWS operational equations.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high