Pollen Forecast for San Gregorio, California

Based on past pollen counts and expected weather conditions, pollen levels for Saturday will be falling into the extremely low range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to rising humidity and heavy rains in the afternoon which tend to wash pollen out of the air.

Concentration of pollen grains in the air for Sunday will be increasing but will still remain in the low range. Since the weather has a major influence on pollen dispersal, this increase is due in part to rising temperatures, strong winds and lower relative humidity. Tomorrow's increase could spell trouble for allergy sufferers.