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Pollen Level
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Pittsburgh'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 Pittsburgh, PA plan outdoor activities and manage symptoms.
Right now: September is peak ragweed month in Pittsburgh. This is often the worst time for fall 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 Pittsburgh 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.
YES
Conditions are manageable, but it's breezy. Most people can head out with light precautions.
Pollen: Tree pollen risk is low today; source reading: Google UPI 0/5 (None).
Best hours: 15:00-17:00
Weather
54°F
Overcast · 94% humidity · 9 mph wind
Google UPI 0/5
Google UPI 0/5