San Antonio Pollen Forecast — Available Days
Daily values appear only when supplied by the data provider. A seasonal estimate is not a daily forecast.
Seasonal Allergen Guide for San Antonio
General seasonal information; this list does not show which pollen is elevated today.
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Cedar/Juniper
Mountain cedar releases massive pollen loads in winter and early spring — notorious in texas and the south.
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Oak
Oak trees release enormous amounts of fine pollen — a leading cause of spring allergies across the us.
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Ragweed
One ragweed plant can produce a billion pollen grains per season, and wind carries it 400+ miles.
Pollen Count San Antonio — What You Need to Know
The pollen count in San Antonio peaks in February–October. Warm winters in the South mean pollen season can begin as early as January and stretch nearly year-round.
Why Is Pollen High in San Antonio?
The primary allergen is Cedar/Juniper — mountain cedar releases massive pollen loads in winter and early spring — notorious in Texas and the South. Pollen spikes on warm, dry, and windy days. Rain temporarily clears the air, but counts rebound fast.
Pollen Season in San Antonio
- Tree pollen — starts in late winter, peaks April–May. Birch, oak, and cedar are the biggest triggers.
- Grass pollen — peaks spring. Affects over 40 million Americans.
- Ragweed — August through October. One plant releases a billion grains per season.
Frequently Asked Questions
What is the pollen count in San Antonio today?
Check the data status above for San Antonio. Provider forecast levels appear only when available. A seasonal estimate is not today's measured pollen count.
What type of pollen is high in San Antonio right now?
The seasonal guide does not establish which pollen is high right now. Current plant-specific levels are not supplied by the seasonal estimate.
When is pollen season in San Antonio?
Pollen season in San Antonio typically peaks in February–October. Tree pollen starts in late winter, followed by grass pollen in late spring through summer, and ragweed from August through October.
What should I do when pollen is high in San Antonio?
On high pollen days in San Antonio: check the forecast before going outside, schedule outdoor activities for the afternoon (pollen peaks 5–10 AM), keep windows closed and use AC, take antihistamines before exposure rather than after symptoms start, and shower after spending time outdoors to remove pollen from skin and hair.
How accurate is the pollen forecast for San Antonio?
Provider forecasts are estimates, not measurements at your address. When provider data is unavailable, this page may show a broad seasonal estimate. Missing daily forecasts remain blank; no accuracy guarantee is made.