I'd wait.

It's still March, and even here in Tennessee, we've had heavy snows in March. Since I've been in the pool business, we've had some really warm Aprils followed by cold Mays . . . and taking care of an uncovered pool that's too cold to swim in will get old fast!

You may not know yet, but a pool catches everything that's blowing around: bugs, leaves, pollen . . . pollen, pollen (the air here is LITERALLY yellow fogged right now from unbelievable amounts of pollen). And all that debris has to be cleaned up.