Boise Pollen Count | Meridian, Nampa, Caldwell, Eagle Pollen Counts

Providing an Accurate Pollen Count for the People of Boise

We pride ourselves in providing the most accurate pollen count to the Treasure Valley and work hard every day to achieve this. We have a collecting system that sits above the heart of the valley on the rooftop of St. Luke’s in Meridian. This allows us to collect a sample of pollens that exemplifies the diverse flora in our communities which includes Boise, Meridian, Nampa, Eagle and Caldwell. Our region has a diverse number of plants that produce pollens which can cause allergy and asthma symptoms such as itchy eyes, runny or stuffy nose and troubles breathing.

We have 100’s of species of trees and a large number of different weeds, most importantly sagebrush, which covers our valley floors. We also see high pollen counts of meadow grasses that we grow to feed animals plus grasses that beautify our parks and lawns. As you can see, we have a lot of different pollens that are in our air.

We utilize the latest, up-to-date technology to collect pollen that is nationally recognized using a device called a Rotorod. The Rotorod sampler collects pollen by rotating rods which are coated with an adhesive. It is a very efficient and effective way of collecting pollen. We then take these samples and by using microscopy, identify the different pollen grains. This is very meticulous work and requires a trained eye. We strive to provide an accurate pollen count at least 3 times a week.

The American Academy of Allergy, Asthma and Immunology provides a course to become a certified pollen counter for the National Allergy Bureau (NAB). The NAB is an Aeroallergen Network responsible for reporting current pollen and mold spore counts. The NAB provides the most accurate and reliable pollen and mold counts throughout the United States.

«November 2021»


0-15 Low

16-90 Moderate

91-1500 High


0-5 Low

6-20 Moderate

21-200 High


0-10 Low

11-50 Moderate

51-500 High

A Note From Brianne Ayers, AAAAI Certified Pollen Counter

If it’s an exceptionally high day in comparison to our typical counts, we call it Very High. And yes, a low day can be just as problematic and a high day.  Especially if its windy out, or you are spending a significant amount of time outdoors, closer to the source and so on. Tree pollens are very specific and unique, so if you are allergic to elm, you are likely symptomatic right now (March).  Juniper and birch are classic ones that cause a lot of symptoms even at lower counts also.  Grass isn’t quite like that, as all grass pollens are sort of treated equal and therefore the low-high scale is more representative.   And if there is a high amount of air particulates (pollution, smoke etc..), this has an increased negative effect for pollen allergy sufferers. 

Pollen Count: High

  • 20 May 2021
  • Author: AllergyGroup
  • Number of views: 585
Total: 162
Pine: 90
Grass: 30
Oak: 10
Willow: 10
Privet: 8
Juniper: 6
Walnut: 5
Mulberry: 2
Ash: 1