Allergies & Pollen for Clackamas, Oregon
7.5
Medium-High
Top Allergens:
Ash, Oak, Birch
Discussion
Concentration of pollen grains in the air for Wednesday will be falling into the very low range. The cause for the falling pollen levels is falling temperatures, rising humidity, and heavy rains in the afternoon which tend to wash pollen out of the air.
Allergy Facts
Technicians must learn to identify dozens of pollen grain types under their microscopes in order to report a pollen count. The number of different plant species which produce these pollen grains adds up to be hundreds. Many different plants produce similar-looking pollen.
