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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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Somerville'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 Somerville, MA plan outdoor activities and manage symptoms.
Right now: May brings the transition from tree to grass pollen in Somerville. 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 Somerville 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
Grass pollen is high, but rain should suppress it. Consider heading out after the rain clears.
Pollen: Grass pollen is high today at 120 grains/m³.
Lower-risk hours: 11:00-13:00
Some data is estimated or unavailable today.
Air Quality
Unavailable
Live air-quality data is currently unavailable.
Weather
58°F
Rainy · 87% humidity · 9 mph wind
~5 grains/m³