Philadelphia, PA Oak Pollen
Oak pollen in Philadelphia usually peaks around April, reaching High at its worst. Philadelphia's allergy year opens with an early tree season and ends with a long ragweed fall: maple and birch in spring, grass through early summer, and ragweed from late summer into October.
Oak in Philadelphia today
Tuesday, July 28, 2026
Oak pollen by month in Philadelphia
How oak usually runs across the year. The current month is outlined.
Managing oak season in Philadelphia
If oak is your trigger, start a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) a week or two before the April peak, rather than waiting for symptoms. Keep windows closed on high-count mornings, shower and change clothes after time outside, and run the AC on recirculate in the car.
When symptoms don't ease with over-the-counter medicine, an allergist in Pennsylvania can test whether oak is really what you react to and talk through longer-term options like allergy shots.
More pollen in Philadelphia
- Philadelphia ragweed pollen — peaks September.
- Philadelphia birch pollen — peaks April.
- Philadelphia grass pollen — peaks June.
- Philadelphia maple pollen — peaks March to April.
- Philadelphia pollen calendar — every allergen, month by month.
- Philadelphia pollen count today — live tree, grass, and weed levels with a 5-day forecast.
- Pennsylvania pollen season — the statewide calendar and other cities.
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Sign up for free alertsSeasonal pattern based on Pennsylvania pollen data and local sources. Today's reading updated daily. MyPollenPal