Higher levels of tree pollen this season are causing big problems for allergy sufferers. Allergists say not only is there MORE pollen this spring, but it's more potent than ever. The good news is that for the next couple of days the pollen index will fall. Dennis Gebhard is president of Multidata, a company based in St. Louis park, that tracks pollen levels nationally. He says the pollen counts are high because we had a slow start to spring: