Allergy season depends on where you live and what you're allergic to. Explore the seasons below to learn more about when certain allergy triggers can appear.

Spring allergies

In some parts of the United States, spring allergy season can start as early as February and last through the summer. It all depends on your geographic location and time when grass, trees, and weeds begin pollinating. The months of March and April tend to be known as high spring allergy season months, when most people experience the worst of their symptoms.

Summer allergies

Spring allergy season can continue into the summer months, as grasses and weeds continue to produce pollen. This is known as summer allergy season.

Fall allergies

Fall can be especially difficult for people who have allergic sensitization to mold, as mold spores thrive in damp locations like falling leaves, dirt, and rotting wood. This time of year is also challenging for those with ragweed sensitization, as ragweed usually begins to pollinate in mid-August and may continue until a hard freeze.

Winter allergies

Winter allergies can occur if you are allergic to indoor allergens, such as mold, dust mites, and animal dander, and may worsen during the months of November through January. You may experience symptoms during the winter months due to increased exposure to these indoor allergens.