Cold, my allergies fare better in cooler environments.

I'm not sure if Washington would be considered hot or cold.... ?

I would prefer a hot state or territory my choice is Hawaii or St. Croix in the US Virgin islands. I have lived in Pa. all my life and it's doable, but I still hate winter, too much rain, and cloudy days.

Well, I live in NC now and I used to live in Pennsylvania, and then Colorado. I'd pick NC for the hot state because I'm already here and know where all the good bars are, and I did enjoy my time in CO, so I'd pick that for my cold state. NC has awful pine pollen in the spring and we usually get at least a week where the temperature is above 95 degress every day, but you got mountains in the west and the ocean down east. CO didn't have any fleas, but you could see a foot of snow come out of nowhere in June.

Central New Mexico is pretty nice.
I've lived in New York, Mass, Florida, Texas and now here.
I'll never move to a cold state again, or the southeast US.