Respira
Alder pollen allergy
Alder is among the first pollens of the year, opening the season in the depths of winter before most trees have stirred. It belongs to the same family as birch, and the two cross-react.
Season
January to April, earliest on the Pacific Coast.
Pollen seasons shift with latitude and elevation — the same species can start six weeks apart in Texas and Minnesota — so treat these months as the shape of the year rather than a date to plan around. Respira shows the level measured for your own location each day.
Symptoms commonly associated with it
Associated with late-winter rhinitis and conjunctivitis. Because it is so early, it can catch people out before they think of it as pollen season at all.
Where it occurs
The Pacific Northwest above all, where it is a major allergen, plus the Northeast and around water in the northern states.
Track it day by day
Respira reports alder pollen for your location every day, alongside the other ten species measured across the United States, air quality on the EPA scale, and a symptom diary you can export for your allergist.
Other allergens in the United States
Respira is an informational tool. It does not replace diagnosis or advice from a medical professional.