Here in Central MA In the spring, we get it too. Not too much you can do about it. Leave your windows up or open the doors and you'll find a thin covering of yellow dust throug out the house. It's amazing.
Overall, I don't mind too much as once the warmer weather get's here my hot tubbing dramaticly goes down from several times a week to maybe once a week. Embrace the pollen....you know...the whole "Spring is reborn thing"... circel of life... the plants coming oout of hiberation....pollen, fresh buds, birds trying to have sex with bees, beer, nature renewed......
Sing with me,..It's the cirlce....the CIRRRRRRRRRRCLE of liiiiiiiiiiiiife.
/sorry. I got out of hand. Hose things down, rinse your filters, and after the pollen has subsided that's my cue to break out the 303 protectant and give my cover a good cleaning.