I haven't seen any pollen yet this year( I am sure its around because my son is already having a problem with his allergies) but we always have lots of green pollen covering our cars, driveway outdoor furniture etc. The last 2 years the pollen has been particularly abundant for some reason and you would hear alot of people talking about how often they had to hose down everything outside.
Some years its so bad that everything is just coated with green and yellow pollen and when it rains you can see it pooled into all the low spots in the yard.
We have lots of maple trees around our neighborhood.