Pollen Forecast for Yosemite Valley, California

The quantity of pollen grains in the air for Thursday will be increasing over today's levels but will still remain in the low range. This is likely to be caused in part by higher temperatures and the lower dewpoint.

The pollen levels for Friday will be falling into the extremely low range. This lower level is caused by falling temperatures, rising humidity, and expected precipitation in the morning, afternoon and evening which tends to wash pollen out of the air.