I had a similar problem several times on my 98 V70. The squirter nozzles on my vehicle were clogged by, according to my dealer, my using less than quality washer fluid. This was one of the more annoying answers that I received since its the first time this ever occurred in 30 years of driving.

Their solution (no pun intended) was that I use Volvo brand washer fluid. It worked fine and over two years, until I got rid of the car, I had no clogged squirters.