Seasonal Pollen Patterns Across the US
If you're bothered by seasonal nasal allergies, you're probably reacting to pollens or mold spores in the air. An estimated 35 million Americans are allergic to these airborne allergens.
There is a predictable pattern to pollen release:
Spring
In the first weeks of spring, trees such as elm, maple, and birch release their pollen; followed by ash, sycamore and oak.
Late Spring/Summer
Later in the spring and summer, grass pollens spread into the air, often starting in early May and lasting through mid-July. Various weeds also begin to pollinate in the spring (such as sage) or summer (such as plantain).
Late Summer/Fall
In late summer and fall, most weeds (like ragweed) produce their pollen, a process that may continue until the first frost.
Year-round
Molds are usually present in the fall, when leaves are decaying. However, they can cause problems year-round-whenever and wherever conditions are damp or humid.
Interactive Map: Pollen Seasons by Region
Preparing for Seasonal Nasal Allergies
By knowing when various pollens are going to be most active in your area, you can get ready for them; for example, if you are 12 years or older, you can help prevent most seasonal nasal allergy symptoms with NASONEX®, if you begin treatment 2 to 4 weeks before each pollen season is expected in your area.
Click on any region of the map to learn which pollens are active in that region and when these pollens are typically at their peak. About a month before pollens you react to are active in your area, ask your doctor if NASONEX® may be able to help.
Sign up to receive Pollen and Weather Alerts and stay on top of pollen conditions in your area.
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