I am so sorry you are dealing with failed AC and hope it gets fixed soon.
In the meantime, you can freeze plastic bottles of water and put them in the enclosure covered by a sock or light towel. Since you are using a fan for evaporative cooling (good job on that!), you could also soak bricks in water and put one or two in each enclosure.
I'm in the same area and it's going to be really bad for awhile. I'd recommend preparing in advance for what you'd do if the power goes out. Have transport tubs with water bowls and cooling packs ready; try to make arrangements with friends or relatives outside of your immediate area to allow you to stay with them if needed, and/or be ready to get out of town with your animals and check into a hotel for a couple of days if necessary.