Pollen Level
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Air Quality
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Gathering pollen, air quality, and weather data for you.
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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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San Francisco's allergy season varies with proximity to the coast. Coastal breezes help, but residents of San Francisco, CA can still experience significant pollen from February through October, especially during dry, warm spells.
Right now: November is quiet for pollen in San Francisco. Wet weather suppresses allergens but can boost indoor mold.
Spring
Feb – May
Tree pollen starts early — alder, birch, and oak are primary triggers.
Summer
May – Jul
Grass pollen peaks. Inland valleys see significantly higher counts than the coast.
Fall
Aug – Oct
Ragweed and sagebrush in drier areas. Coastal cities see lower counts.
Ocean breezes near San Francisco can help clear pollen, but inland valleys trap allergens. Wildfire season also degrades air quality significantly. PollenTracker monitors both pollen and AQI to give you the full picture.
Open another nearby forecast without going back to the map.
YES
Pollen is low and air quality is good. No precautions needed — enjoy your day.
Pollen: Tree pollen risk is low today; source reading: Google UPI 0/5 (None).
Best hours: 12:00-14:00
Pollen Level
None
Google UPI 0/5 · Tree
Weather
61°F
Sunny · 59% humidity · 3 mph wind
Google UPI 0/5
Google UPI 0/5
Google UPI 0/5