Allergies & Pollen for Fresno, California
Discussion
Concentration of pollen grains in the air for Friday will be increasing in the moderate 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.
Allergy Facts
Cattail, a relative of grasses, typically grows in wet, marshy areas. These plants can shed tremendous amounts of pollen during the summer but are not a significant cause of hayfever.