# Wind Chill Factor

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Wind chill factor, abbreviated as $$T_{wc}$$, is an index of the air temperature and the wind velocity.

## Wind Chill factor formulas

 $$\large{ T_{wc} = 35.74 + 0.6215 \; T - 35.75\; v^{0.16} + 0.4275\;T\; v^{0.16} }$$ (fahrenheit) $$\large{ T_{wc} = 13.12 + 0.6215 \; T - 11.37\; v^{0.16} + 0.3965\;T\; v^{0.16} }$$ (celsius)

### Where:

 Units English Metric $$\large{ T_{wc} }$$ = wind chill factor $$\large{dimensionless}$$ $$\large{ T }$$ = temperature $$\large{F}$$ $$\large{C}$$ $$\large{ v }$$ = wind velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$