Pollen Month-By-Month
January Allergies
Cedar pollen is high in the South during the winter and early spring, but otherwise pollen count is low across the US.
Explore different allergens, symptoms, causes, and relief tips with our seasonal allergies guide.
Trees: Mild
Grass: Low
Weeds: Low
February Allergies
Tree pollen, like alder and maple, starts to creep up during the late winter months.
Trees: Moderate
Grass: Low
Weeds: Low
March Allergies
Tree pollen is dominant during this month, but weeds and grasses could start to produce pollen if Spring comes early.
Discover additional sources of pollen and find tips on how to relieve your spring allergies here.
Trees: High
Grass: Mild
Weeds: Low
April Allergies
April is the peak season for pollen allergies caused bytrees like pine, mulberry and willow.
Trees: Very High
Grass: Moderate
Weeds: Mild
May Allergies
It’s a double whammy month with trees and grass releasing high levels of pollen everywhere.
Trees: High
Grass: High
Weeds: Mild
June Allergies
Pollen allergies in June are mainly caused by grass pollen like bermuda, rye and cat.
Find out about common causes, symptoms, and management tips with our summer allergies guide.
Trees: Moderate
Grass: Very High
Weeds: Moderate
July Allergies
Just as we get some relief from tree pollen, weed pollen starts to increase in July.
Follow our outdoor allergy symptoms guide to discover pollen allergy management and treatment tips.
Trees: Moderate
Grass: Very High
Weeds: High
August Allergies
Pollen caused by weeds like pigweed, ragweed and nettle are in full effect.
Trees: Mild
Grass: Moderate
Weeds: High
September Allergies
The height of weed pollen - with pollen grains that spread easily in the wind.
Check out our Understanding Fall Allergies Guide for more information on how to manage your allergies during this season.
Trees: Mild
Grass: Mild
Weeds: Very High
October Allergies
Weed pollen is still high in the south and west but otherwise the air is pretty clear during this time of year.
Trees: Low
Grass: Mild
Weeds: High
November Allergies
It’s a good month for outdoor allergies and ragweed pollen is finally ending.
Trees: Low
Grass: Low
Weeds: Mild
December Allergies
Outdoor allergies are at a low except for Cedar Fever increasing in the South.
Learn more about how to manage your winter allergies with our guide.
Trees: Mild
Grass: Low
Weeds: Low
Try ZYRTEC® for Monthly Allergy Relief
ZYRTEC® provides relief for pollen allergies day after day. Try ZYRTEC® Allergy Relief Medicine Tablets for month long allergy relief and discover additional ZYRTEC® allergy relief products that can help relieve your indoor and outdoor allergy symptoms here.
Check out our AllergyCast® Pollen Forecast & Allergy Symptom Tracker App
Stop trying to guess the pollen count & get an accurate pollen forecast everyday with the AllergyCast® App. Discover your local pollen forecast, keep track of your allergy symptoms, and learn new tips on how to manage your allergies with our AllergyCast® app.
