I have good luck w/ the Allegra D - two pills a day. Dries out my throat so I have to eat cought drops. It stinks any way you look at it.
Past two yrs I've missed almost a week each Spring. I never had this problem when I was younger. I had sinus surgury three yrs ago to correct a deviated septum - I think my allergies are linked to this. More air into my nose than before.....LOL.
When I am on the ocean, there is no pollen out there so I am fine.

Each morning my car has a yellow hue to it due to the pollen in the air.
I tried allergy shots for a number of months and stopped because I felt like a pin cushion. Three shots each week - did that for a few months and then I just stopped. You have to do the shots for a while to develope immunity.
Co-worker of mine has been seeing an accupuncturist that prescribed some herbal remedy: he boils there weird herbs in water, lets it cool and then sniffs it into his sinuses/nose. Sounds gross....LOL. He claims its works. He breathes the stuff once a week, or every other week. He hasn't had the need to take any allergy pills at all since he started treatment.
I never open windows to car at all, or house and have the A/C most of the time.