Allergies & Pollen for Yosemite Natl Park, California
Discussion
Concentration of pollen grains in the air for Saturday will be unchanged in the moderate range. This is a result of stable temperatures and stable humidity. Constant and seasonally normal weather conditions tend to stabilize pollen concentrations in the outdoor air.
Allergy Facts
If a summer vacation involves a long car trip, remember to close the windows and use the air conditioner, set to recirculate, this reduces pollen exposure as you drive.