I think someone is pulling your leg about Pasco's air quality. Kennewick, WA, which is just across the Columbia River from Pasco, reports air quality of 41 and Pasco reports, what, 68? Get real, the two cities are right next to each other. Also, if I am not mistaken, they both rely on the same DEQ or EPA monitors ... in the same identical location. I don't believe they have separate monitoring stations. If I am wrong, let me know. Otherwise, take the numbers with a grain of salt.