The Santa Ana winds come from the desert and they are very hot and dusty. It was over 100 every day and 40 mph wind gusts. It was awful. If you have allergies you will be miserable but you can't plan for them. Also lots of rides will go down due to the winds tripping senors and no fireworks or WOC or fantasmic. But you cannot plan for them. You won't know about them in the weather forecast until about 4 or 5 days before. But usually you don't get the Santa Ana winds until the late summer.