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Pollen Level
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Air Quality
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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: May brings the transition from tree to grass pollen in Philadelphia. Both can be elevated, making this a tough month for allergy sufferers.
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.
CAUTION
Limit exposure
Grass pollen is high and 16 mph wind is stirring it up. If you need to be outside, aim for the safest window later in the day.
Lower-risk hours: 11:00, 20:00-21:00
Pollen Level
High
250 grains/m³ · Grass
Air Quality
AQI 53
Moderate
Weather
63°F
Cloudy · 38% humidity · 16 mph wind
~250 grains/m³
~50 grains/m³
~5 grains/m³