Allergies & Pollen Count for Vista, California
4.4Low-Medium
Top Allergens:
Grass, Cedar/Juniper
Discussion
Based on past pollen counts and expected weather conditions, pollen levels for Sunday will be falling in the moderate range. This forecast of lower pollen concentration is based on falling temperatures, rising relative humidity and weaker winds.
Allergy Facts
Quack grass, a grass which was naturalized from Europe, is a nuisance that plagues farmers. This plant flowers (i.e., sheds pollen) from July to September and can cause hay fever symptoms in people with grass pollen allergies.