Pollen Forecast for Umatilla, Oregon

Concentration of pollen grains in the air for Sunday will be higher than they were today but will stay in the very low range. Since the weather has a major influence on pollen dispersal, this increase is due in part to seasonally normal weather conditions which are favorable for the production and dispersal of pollen.

The quantity of pollen grains in the air for Monday will be falling into the extremely low range. This forecast of lower pollen concentration is based on falling temperatures, rising humidity, and expected precipitation in the afternoon and evening which tends to wash pollen out of the air.