David: This has been an increasing problem in locations west of the Cascades, especially in wet springs. Last year was a wet spring and that exacerbated most diseases of fruit trees, including European pear rust. Unfortunately, none of the fungicides registered for use on this disease are available to home gardeners. See the comments in the PNW Handbook on this disease: https://pnwhandbooks.org/plantdisease/host-disease/pear-pyrus-spp-trellis-rust-european-pear-rust

Best options sans a fungicide are good air flow (pruning for it), picking up and destroying infected leaves/fruit where possible, and enjoying the drier springs when we get them. A licensed commercial operator could, potentially, spray your trees and or the junipers of your neighbor. I do expect more conflicts between juniper plantings a home pear culture. Hope this helps.
Chip Bubl. OSU Extension, Columbia County, retired. <personal data hidden> still works