Allergies & Pollen Count for Napa, California
3.9Low-Medium
Top Allergens:
Grass, Chenopods, Cedar/Juniper
Discussion
Pollen concentrations for Wednesday will be at about the same level in the moderate range. This is a result of stable humidity. If you do suffer from allergies, tomorrow should be about as difficult outdoors as it was today.
Allergy Facts
Giant ragweed, also known as horse weed, can attain heights from ten to fifteen feet, with stems as large as two inches thick at the base.