Pollen Counts

American Academy of Allergy, Asthma, and Immunology 


Pollen Station

The AAAAI sponsored pollen counts are performed throughout the U.S. by allergists or their staff members. All pollen and spore counters are either certified or becoming certified by AAAAI. These are the most up-to-date, comprehensive and accurate source of pollen and spore counts available.


What do pollen/spore count numbers mean?

Pollen/spore counts are specific for different regions.

These counts are then correlated to the number of grains or spores generally required to cause clinical symptoms such as sneezing, itching, or wheezing. The definitions vary for the different classes of pollens or spores:

Tree Pollens: 0-14 low; 15-89 moderate; 90-1499 high; >1500 very high.
Grass: 0-4 low; 5-19 moderate; 20-199 high; >200 very high.
Weed: 0-9 low; 10-49 moderate; 50-499 high; >500 very high.
Mold: 0-6,500 low; 6,500-13,000 moderate; 13,000-50,000 high; >50,000 very high.

Generally these ratings correlate with how someone feels. 

Check your symptoms against the pollen count ratings and see if they correlate for you!