Piru Fire is a non-issue for the Fishbowls area; they're at opposite ends of Piru Creek (~70 miles apart), although I'd agree with Diane that getting to the TH for the Fishbowls is probably farther than the OP wants to drive. There's no easy direct route there.
As a further hindrance to local summertime Socal hiking, like others have said, temps get high and water levels get low. Even the larger, more reliable creeks and streams in the Southern Los Padres are drying up (in places). You will still find pools and sections with running water, but it's hit or miss.
The southern Sierra, entering from either the west side (near Poterville, Springville or Kernville) or from the east side around Olancha keeps you in pretty close to LA/OC and should be a lot more pleasant this time of year. Plenty of water in the Kern and Little Kern. No permit hassles for Sequoia NF (as opposed to Sequoia NP) either…