Answer :
$$30^{\circ}C$$
Explanation:
Because if we convert $$-30^{\circ}F$$ to celusis by ,
$$\dfrac{C}{100} = \dfrac{F - 32}{180} $$
we get - $$30^{\circ}F $$ equal to $$-30^{\circ}C$$
$$-30^{\circ}C = - 22^{\circ} F $$
So$$ \therefore $$ we can say $$-30^{\circ}C$$ is warmer