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Gathering pollen, air quality, and weather data for you.
Gathering pollen, air quality, and weather data for you.
Pollen Level
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Air Quality
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Weather
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Philadelphia's allergy season typically runs from March through October, with two distinct peaks. Tree pollen surges in spring, then ragweed takes over in late summer. Understanding these patterns helps residents of Philadelphia, PA plan outdoor activities and manage symptoms.
Right now: March marks the start of tree pollen season in Philadelphia. Early-blooming trees like elm and maple begin releasing pollen on warm days.
Spring
Mar – May
Oak, birch, and maple tree pollen peak. Highest risk in April–May.
Summer
May – Jul
Grass pollen dominates. Humid days can elevate mold spore counts.
Fall
Aug – Oct
Ragweed season. Second major peak for allergy sufferers.
Coastal breezes near Philadelphia can provide temporary relief, but spring nor'easters often redistribute pollen across wide areas. PollenTracker monitors these daily shifts so you know when it's safe to head outside.
Open another nearby forecast without going back to the map.
Weather
32°F
Cloudy · 71% humidity · 7 mph wind
Air Quality
AQI 49
Good
Pollen Level
High
120 grains/m³ · Tree
~120 grains/m³
~5 grains/m³
~5 grains/m³
Hourly pollen risk is estimated from weather trends when no live hourly pollen feed is available.
CAUTION
Tree pollen is high. If you need to be outside, aim for the safest window later in the day and keep precautions in place.
Lower-risk hours: 11:00-13:00