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Checking today's conditions
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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Gilroy's allergy season varies with proximity to the coast. Coastal breezes help, but residents of Gilroy, CA can still experience significant pollen from February through October, especially during dry, warm spells.
Right now: October ends pollen season in Gilroy. Fall rains help clear remaining allergens from the air.
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 Gilroy 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.
Pollen Level
Unavailable
Live pollen data is currently unavailable.
Weather
82°F
Sunny · 35% humidity · 5 mph wind
Air Quality
Unavailable
Live air-quality data is currently unavailable.
CAUTION
One or more live signals are missing, so use today's recommendation as a conservative estimate.
Pollen: Live pollen data is unavailable right now.
Lower-risk hours: 16:00-18:00
Some data is estimated or unavailable today.
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.