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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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Hampstead'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 Hampstead, NH plan outdoor activities and manage symptoms.
Right now: August is when ragweed season begins in Hampstead. Counts can spike quickly after dry, windy 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 Hampstead 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.
Google UPI 0/5
Weather
85°F
Sunny · 48% humidity · 8 mph wind
YES
Tree pollen is moderate with calm conditions. Most people can head out comfortably.
Air quality: AQI is 34 (good).
Best hours: 20:00, 20:00-21:00
Hourly pollen risk is estimated from weather trends when no live hourly pollen feed is available.
Informational only. Not medical advice. For health concerns, please consult a qualified healthcare provider. Editorial standards.