August 23, 2021

Everything You Need to Know About Allergies in Phoenix

In our latest blog at Aspire Allergy & Sinus, we're diving into the world of Phoenix allergies, providing valuable insights to help our readers navigate this challenging season. We'll be discussing a range of topics, including the worst months for allergies in the Phoenix area, shedding light on when allergy sufferers can expect peak pollen levels. We'll also delve into the most common allergens in Phoenix, highlighting the trees, grasses, and weeds that tend to trigger allergy symptoms. Additionally, we'll share expert advice on the best ways to treat allergies specifically in Phoenix, offering strategies and treatment options tailored to the unique allergenic landscape of this region. 

Allergies in Arizona

Allergies in Arizona can be a significant concern for residents and visitors alike, as the state's unique climate and plant life give rise to a variety of allergens. Common allergens in Arizona can be categorized into three main groups: trees, weeds, and grasses. In the spring, trees like juniper, oak, and mulberry release their pollen, triggering allergies from March to May. Weeds, such as ragweed and sagebrush, become prevalent in late summer and fall, with peak allergenicity from August to November. Lastly, various grasses, including Bermuda grass and Arizona fescue, contribute to allergies during the late spring and early summer months. In general, Arizona's allergy season spans from late winter through fall, with peaks during specific times for each allergen category. Residents often find themselves seeking relief through various means, including allergy medications and avoidance strategies during these peak seasons.

When is allergy season in Phoenix?

The worst allergy season in Phoenix typically occurs during the late spring and early summer, specifically in May and June. This period is marked by a simultaneous release of pollen from various trees, most notably juniper, oak, and mulberry, as well as grasses like Bermuda grass and Arizona fescue. The reasoning behind this peak in allergies is the convergence of multiple allergenic sources, creating a perfect storm for allergy sufferers. As temperatures rise and spring transitions into summer, the pollen count tends to reach its highest levels, leading to more severe symptoms for those who are sensitive to these allergens. During this time, individuals with allergies in Phoenix often experience heightened discomfort and may need to take extra precautions to manage their symptoms effectively.

How does the dry weather affect allergy symptoms in Phoenix? 

Dry and breezy climates can be the perfect conditions for spreading pollen, and it can spread for miles. Rain can wash allergens out of the air and tamp down anything flying around, but typically, that relief is short-lived. Once the rain seeps down into the earth, vegetation will start to grow and repeat the process all over again.

What are the most common allergens in Phoenix? 

Like many regions where allergies are a problem, the most common allergy irritants are trees, weeds, and grasses.

Common tree allergies in Phoenix

Ash: Ash trees are commonly used in Phoenix landscaping and are very active pollinators in the spring.

Mesquite & Mulberry: These trees have played a large part in the rise in pollen counts in Arizona over the past 30 years. They produce a large amount of pollen in March and April, making them a significant contributor to Phoenix allergies overall. 

Cottonwood: Cottonwood tree allergies are fairly common in the area, and those who suffer tend to have severe reactions. Cottonwood trees peak a little earlier than other trees, with peak season coming in February.

Juniper: Juniper trees, also known as mountain cedar, are a common source of allergies in the Phoenix region and tend to cause problems in the winter months.

Common Weed and Shrub Allergies in Phoenix

Careless Weed: A flowering plant that is often mistaken for pigweed, careless weed is not native to Arizona but can be found along the sides of roads and covering open fields. Careless weed pollinates May through November, with the peak season being August and September.‍

Ragweed: A perennial weed, ragweed is arguably the most common allergen and is known to have two peak seasons, one in the spring and one in the fall.  

Russian thistle: a type of tumbleweed that many are sensitive to in the Phoenix region. Contact with Russian thistle can lead to skin rashes and other more typical allergy symptoms like itchy, watery eyes, sneezing, congestion, and a runny nose. Russian thistle pollinates May through November, with the peak season being September and October.

Common Grass Allergies in Phoenix

Bermuda grass: This grass can be found in Phoenix area fields, parks, home lawns, and golf courses. As far as allergies in Phoenix go, this grass is more significant than others because it is extremely allergenic and found in many places.

Johnson grass: This type of grass is less used for landscaping purposes but is commonly found along roadsides, in ditches, and in fields.

Download our free allergy calendar customized for your area to track peak allergen seasons and identify what might be affecting you:

Download your free allergy calendar here!

What are the most common allergy symptoms in Phoenix?

In our experience, patients seem to be the most bothered by:

  • Congestion or runny nose

The problem is that these can often be confused with cold symptoms. The key indicator is if you have been experiencing these symptoms for more than 10 days, it is likely allergies that are causing the problem, as the common cold tends to subside in about a week.

How to prepare for allergy season in Phoenix

The Phoenix allergy season can be a challenging time for many individuals, but with some proactive steps, you can minimize discomfort and enjoy the outdoors. Here are some helpful tips on how to prepare for allergy season in Phoenix.

Before allergy season begins:

Identify Your Allergens: Understand what triggers your allergies by consulting with an allergist and undergoing allergy testing.

Monitor Pollen Counts: Keep an eye on the Phoenix pollen count, available through various apps and websites, to prepare for high pollen days.

Around Your Home:

Use High-Efficiency Filters: Install HEPA filters in your home's HVAC system to trap allergens and improve indoor air quality.

Keep Windows Closed: Keep windows and doors closed during peak pollen times to prevent outdoor allergens from entering your living space.

Regular Cleaning: Regularly clean and vacuum your home to reduce indoor allergen buildup.


Wear Protective Gear: If working outside, wear a mask, sunglasses, and a hat to minimize pollen exposure.

Shower and Change: After spending time outdoors, shower and change your clothes to remove any pollen clinging to your body.

Avoid Peak Pollen Times: Limit outdoor activities during high pollen times, typically in the morning and on windy days.

By following these tips and being proactive in managing your allergies, you can better prepare for allergy season and enjoy a more comfortable and symptom-free experience during this challenging time of the year.

Treating your Phoenix allergies

Aspire Allergy & Sinus understands the unique challenges posed by Phoenix allergies, and we offer a range of cutting-edge treatments to provide relief to our patients. Our comprehensive approach includes:

Allergy Drops (Sublingual Immunotherapy): For those seeking a convenient and needle-free option, our allergy drops are a fantastic choice. Designed to treat a variety of allergies common in Phoenix, including pollen and dust mite allergies, these drops are taken orally and can be administered from the comfort of your home. Over time, they help desensitize your immune system to allergens, reducing your body's allergic response and providing lasting relief.

Allergy Shots (Subcutaneous Immunotherapy): Our allergy shots are a highly effective treatment option for those dealing with severe allergies. Administered in the clinic, these injections contain tiny amounts of allergens. With consistent treatment, they can help your immune system build tolerance to allergens prevalent in Phoenix, such as tree pollen and grasses, ultimately reducing allergy symptoms and the need for medication.

ExACT Immunoplasty: ExACT Immunoplasty is an advanced, minimally invasive treatment designed to target the root cause of allergies. This procedure provides long-lasting relief by changing your immune system's response to allergens, effectively alleviating symptoms. With ExACT Immunoplasty, patients in Phoenix can look forward to a future with significantly reduced allergy discomfort and improved quality of life.

FAQ's About Phoenix Allergies

Where can I get an allergy test in Phoenix?

If you're looking for a trusted place to get an allergy test in Phoenix, Aspire Allergy & Sinus is here to help. We offer multiple convenient locations throughout Phoenix, including Chandler, Mesa, and Tempe, where you can receive comprehensive allergy testing and personalized allergy treatment. Our team of experienced allergists is dedicated to providing accurate diagnoses and effective management strategies tailored to your specific needs. Whether you suspect you have allergies or want to better understand your allergy triggers, our clinics are equipped to assist you on your journey to allergy relief. At Aspire Allergy & Sinus, we're committed to helping you breathe easier and live a life free from the burdens of allergies.

What are the worst months for allergies in Phoenix?

In Phoenix, the worst months for allergies typically fall between late February and early June. During this period, various allergenic sources contribute to heightened allergy symptoms in the region. February and March mark the onset of tree pollen season, with trees like juniper and mulberry releasing pollen into the air. In April and May, tree pollen levels remain high, overlapping with the emergence of grass pollen, particularly Bermuda grass and Arizona fescue. This combination of tree and grass pollen during late spring leads to a peak in allergy symptoms for many residents.

Is Phoenix a good place to live for allergy sufferers?

Phoenix can be a somewhat challenging place to live for allergy sufferers due to its unique climate and allergenic flora. While it may not be the worst place for allergies, it's important to consider several factors. The desert climate does reduce some common allergenic triggers, such as mold and mildew. However, Phoenix experiences high pollen levels from trees, grasses, and weeds during various seasons, particularly in late spring and early summer. Additionally, the dry desert air can exacerbate respiratory symptoms, so proper hydration and indoor air quality control are essential.

Is the desert climate good for allergies? 

The impact of a desert climate on allergies can be a mixed bag for individuals. On one hand, the arid conditions of desert regions like Arizona can limit the growth of mold and mildew, which are common allergenic triggers in more humid environments. However, desert climates often come with their own set of challenges for allergy sufferers. The dry air can lead to irritation of the respiratory passages, potentially exacerbating symptoms for those with allergic rhinitis or asthma. Additionally, desert regions may have high levels of airborne dust and particulate matter, which can irritate the respiratory system. So, while desert climates may offer relief from some allergens, it's important for individuals with allergies to take precautions and seek guidance from allergists to manage the specific challenges presented by these environments.

When is allergy season in Arizona?

In Arizona, allergy symptoms are most problematic in the spring, when trees, plants, weeds, and grass come back to life after the winter. Allergies in Arizona also tend to have another peak in the late summer months of August and September, when certain weeds and shrubs are thriving. 

How Aspire Allergy & Sinus can help

At Aspire Allergy & Sinus, our mission is to offer customized allergy treatments tailored to the unique challenges posed by allergies in the Phoenix region. Whether you prefer the convenience of allergy drops, the routine of allergy shots, or the innovative ExACT Immunoplasty, our dedicated team is committed to helping you discover the ideal solution for your allergy needs. With clinics conveniently located in Chandler, Mesa, and Tempe, you'll find expert care right in your neighborhood. Our Phoenix team, led by Dr. Chris Thompson, sinus surgeon, Dr. Miriam K. Anand, allergist, Monica Burns, PA-C, MPAS, and Caitlin Suriano, PA, are devoted to delivering the utmost care and relief to all our Phoenix patients. Say goodbye to short-term, over-the-counter solutions and take control of your allergies by booking your appointment with us online today!

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