Allergies & Pollen for Napa, California
6.4
Medium
Top Allergens:
Grass, Olive
Discussion
The amount of pollen in the air for Sunday will not change appreciably and will remain in the moderate range. This lack of change in airborne pollen will continue to affect those who suffer from allergies and those who live with the allergy sufferers.
Allergy Facts
Although pollen grains can often travel extreme distances from the plants that shed them, grass pollen tends to stay near its source. One study demonstrated that 99% of grass pollen remains within a mile of the plants that shed it. This suggests that the cause of grass pollen allergies is probably right outside your door -- perhaps the front lawn or some roadside grasses.