To convert 30°C to Fahrenheit using the formula \( F = \frac{9}{5}C + 32 \), we start by substituting \( C \) with 30.
\[ F = \frac{9}{5}(30) + 32 \]
Calculating \( \frac{9}{5}(30) \):
\[ \frac{9}{5} \times 30 = \frac{270}{5} = 54 \]
Now, add 32:
\[ F = 54 + 32 = 86 \]
So, the temperature in Fahrenheit is:
\[ \boxed{86} \]