Allergy Season in San Jose, California: Everything You Need to Know (2024)

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San Jose, California has fairly warm weather most of the year, but because it has a more coastal climate, pollen counts tend to be lower than in other states with similar weather conditions. There are still many seasonal allergies in California, and indoor allergies can also cause issues for many.

Wyndly is an excellent resource for allergy sufferers. Our allergy doctors will create a personalized treatment plan to help provide you with long-term relief from your allergies. Schedule a consultation today to get a personalized treatment plan, or read on to learn more about seasonal allergies in San Jose.

What Are Seasonal Allergies?

Seasonal allergies typically refer to allergies that are triggered by pollen. Each type of plant only releases pollen during certain times of the year. Pollen allergies in San Jose are primarily triggered by pollen from grasses, trees, and weeds.

When Is San Jose Pollen Season?

Depending on what you are allergic to, you can experience allergy symptoms at any time of the year in San Jose. Pollen allergies will flare up in the spring, summer, and fall, while indoor allergies can cause allergic reactions at any point in the year.

Most spring allergies are the result of tree pollen. Summer pollen allergies are primarily caused by grass pollen. If you have seasonal allergies in the fall, your allergies are likely caused by pollen from weeds.

San Jose is in the Coastal & Central California allergy region. Each region has slightly different allergens and allergy seasons, so we’ve compiled the region-specific information for allergy season in California.

Pacific Allergen Zone Map

When Does Allergy Season Start?

San Jose allergy season starts in the spring. California has a milder winter, so seasonal allergies will commonly begin in late January. This is a longer allergy season than average, but because of California’s climate, allergy season can be a bit better for allergy sufferers.

What Months Are San Jose Allergy Season?

In San Jose, you’ll want to keep an eye on pollen counts in April, May, and September. These months are when seasonal allergies are typically at their peak. During these months, try limiting your time outdoors or going out in the evening when pollen counts tend to be lower in San Jose.

If you have seasonal allergies and are traveling to San Jose during April, May, or September, make sure you have an allergy treatment plan that works for you before your trip. During your trip, check the local pollen count daily to adjust your plans accordingly.

When Does Allergy Season End?

San Jose allergy season usually ends around late October or November. This means that residents get a break from their seasonal allergies. Even though San Jose might not have as many outdoor allergens to worry about during the winter, indoor allergens can still cause issues for many allergy sufferers.

If you suffer from indoor allergies, such as allergies to dust, pet dander, or mold, you might notice that they worsen during the winter if you spend more time inside than usual.

Common Allergens

While this is not a comprehensive list, some of the most common allergens in San Jose include:

  • Willow tree
  • Oaktree
  • Maple tree
  • Bermuda grass
  • Bent grass
  • Timothy grass
  • Ragweed
  • Saltbush
  • Sagebrush
  • Amaranth
  • Coyote brush
  • Smotherweed

Read more about allergies in San Jose.

What Are Seasonal Allergy Symptoms?

The most common allergy symptoms stay the same between each city and state. However, the severity of your allergy symptoms will vary on the severity of your allergies and the time of year you are in California.

Common allergy symptoms include:

  • Runny or stuffy nose
  • Red, itchy and watery eyes
  • Congestion
  • Coughing
  • Headaches
  • Sneezing fits
  • Brain fog
  • Painful sinuses
  • Scratchy throat
  • Post-nasal drip
  • Rashes or hives
  • Aggravated asthma symptoms

How to Prepare for Seasonal Allergies in San Jose?

If you are suffering from seasonal allergies, take an allergy test to identify what allergens are triggering your symptoms. The easiest way to get an allergy test in San Jose is by ordering Wyndly’s at-home allergy test. Get your allergy test today to identify your allergies!

Understanding what allergies are causing your symptoms will make it easier for you to avoid your triggers and find effective treatments.

Who Are San Jose Allergy Doctors?

There are several professionals in San Jose who you can visit for help with your seasonal allergies. Allergists, immunologists, and ENTs are among the most common allergy doctors. The are several things to consider when choosing a provider. However, the most important is choosing someone you trust.

When looking for your doctor, you should consider a doctor that will be easy for you to visit and whose schedule aligns with yours. It is also essential to work with someone who will take into account both your test results and your allergy history.

Wyndly’s allergy doctors are committed to providing long-lasting relief from symptoms. Our doctors will create a personalized treatment plan for you based on your allergy test results and your allergy history.

Allergy Symptom Relief and Treatment

Allergies can feel difficult to manage, but there are several different methods you can try out to decrease or eliminate your allergy symptoms.

Limit Exposure

An effective method of decreasing your symptoms is limiting your exposure to the allergens that are triggering your allergies. While pollen can be difficult to avoid, there are ways that you can decrease your exposure to pollen in San Jose.

  • Check daily pollen count: Generally, pollen tends to be highest in the morning and afternoons, making evenings the best time to go outside. Another tip is to check San Jose’s pollen forecast and limit outdoor time on high pollen count days.
  • Trim trees, mow the lawn, and pull weeds: Regularly manicuring your yard can reduce the pollen released directly around your home.
  • Wear a mask outdoors: To prevent pollen from entering your airways, you can wear a dust mask when you go outside in San Jose.
  • Clean regularly: Due to the sticky nature of pollen, it is essential to clean your home and do laundry frequently. Similarly, showering after being outdoors will allow you to wash off any pollen.
  • Keep windows closed: Pollen easily enters the home through open windows and doors. Running your A/C and closing windows and doors during allergy season in San Jose will effectively combat this.
  • Install a HEPA filter: Installing a HEPA filter on your A/C can help reduce the pollen levels circulating in your home.


Over-the-counter (OTC) medications are widely available in San Jose, and they provide short-term relief from your allergy symptoms. If antihistamines, nasal sprays, and eye drops don’t provide enough relief from your seasonal allergies, you can look into allergy treatments that will provide long-term relief instead of just masking your symptoms.

Sublingual Immunotherapy

If you want lifelong relief from your seasonal allergies in San Jose, sublingual immunotherapy is the best solution. Sublingual immunotherapy involves exposing your immune system to small doses of the allergens that trigger your allergies. Through this exposure, your body becomes desensitized to your allergies, providing long-term relief.

Getting sublingual immunotherapy in San Jose is easy and convenient. Sublingual immunotherapy is also just as effective as allergy shots, but it can also be taken from the comfort of your home.

The Best Allergist in San Jose for Seasonal Allergies

If you are looking for the best doctor to treat your seasonal allergies in San Jose, look no further than Wyndly. At Wyndly, our allergy doctors will create a personalized treatment plan for your allergies to get you long-term allergy relief from your San Jose seasonal allergies.

Take our easy online assessment today to see if our doctors can get you long-term allergy relief from your seasonal allergies!

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