Allergy Seasons in Whatcom County:

                  February through April :          Tree pollen season.              

                  Mid May through July:            Grass pollen season. Some weed pollens are present also.

                  July through late summer:        Weed pollen season.

                                                                   Mold spores are detected from late spring through fall

                  Fall though winter:                  Dust mites and other indoor allergens such as animal dander and mold. Outdoor mold.

For more information view Bellingham Asthma and Allergy Seasons.

To learn about how pollen causes allergy symptoms, including asthma, and for information about treatment, check out the  Pollen Allergy  page.  Pollen and mold counts are provided below.

For those residents who have moderate to severe spring and summer allergy symptoms,  allergy therapy should consist of an antihistamine such as Claritin (loratadine) or Zyrtec (cetirizine) over the counter, Allegra (fexofenadine), Xyzal or Clarinex prescription antihistamine and a prescription anti-inflammatory  nasal spray. Antihistamine therapy alone is usually effective only for those with mild allergy symptoms.  Eye drops such as prescription Pataday, or over the counter Alaway (ketotifen) may be needed for eye symptoms. Nasal therapy that contains antihistamine medication (Dymista, Patanase)  may be effective within minutes, and may be used to block histamine release in the nose before high allergen exposures.  Recurrent cough, bronchitis and other respiratory symptoms that develop this time of year probably represents asthma due to pollens. Symptoms usually respond well to inhaler medications. 

For additional information about allergy treatment, click on the following links for the American Academy of Allergy, Asthma and Immunology  tips on allergy medication:    Allergy Medication, or on nasal allergy   Rhinitis

Pollen and mold counts: 

Pollen and mold counting and reporting will continue through late summer.  Check out the link below for

In the summer, May through July, grass pollens are the most important in causing allergy symptoms. Weed pollens and mold spores can also be a problem for many.

For updated  Whatcom Co. pollen and mold counts visit

For additional pollen count information for Western Washington, see the National Allergy Bureau's pollen and mold counts   NAB


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