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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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Washington'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 Washington, DC plan outdoor activities and manage symptoms.
Right now: September is peak ragweed month in Washington. 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 Washington 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
Tree pollen is moderate with calm conditions. Most people can head out comfortably.
Air quality: AQI is 43 (good).
Best hours: 14:00-15:00, 17:00
Weather
71°F
Cloudy · 64% humidity · 6 mph wind