Arizona Allergy Season 2026: What to Expect and How to Find Relief
Sniffing, sneezing, itchy eyes, and a runny nose? Yep, it’s officially allergy season in Arizona. The 2026 allergy season is predicted to be longer and more intense across the U.S., with high pollen levels forecast in 29 states . Arizona is already experiencing an early start due to warmer winter and spring temperatures.
Why are allergies so bad in Arizona right now?
Several factors contribute to worsening allergies in Arizona cities like Phoenix. These include early tree pollen release due to warm temperatures, the dry desert air allowing pollen and dust to remain airborne longer, and windy conditions that spread pollen over large areas. Urban landscaping with highly allergenic plants, such as olive and mulberry trees, also plays a role. Climate change, which lengthens growing seasons and increases pollen production, further exacerbates the issue . Arizona often experiences nearly year-round pollen activity.
Is there a lot of pollen around at the moment?
Yes, pollen levels are currently high in Arizona, particularly around Phoenix. Tree pollen is the primary culprit, with plants like ash, mulberry, juniper, and cottonwood actively releasing pollen into the air .
What are the worst months for allergies in Arizona?
The worst months for allergies in Arizona typically fall during the spring and fall:
- February–April: Tree pollen (juniper, ash, mesquite, olive)
- May–June: Grass pollen peaks
- September–October: Weed pollen such as ragweed
For many people in Phoenix, March through May tends to be the most intense period of allergy symptoms .
What can you do to reduce allergy symptoms?
Unlike humid areas, desert allergens behave differently. Running air conditioning instead of opening windows and cleaning dust frequently, along with vacuuming with HEPA filters, can assist reduce allergy symptoms .
Common Allergies and Allergens in Arizona
Arizona’s year-round growing season means pollen production peaks in March and April . Common allergens include:
- Rye grass
- Ragweed
- Mesquite trees
- Juniper trees
- Bermudagrass
- Mulberry trees
- Mold
What state has the worst allergy season?
Fortunately, Arizona didn’t rank among the states with the worst allergy seasons in 2026. States like Idaho, California, Oklahoma, Utah, New York, and Kansas were ranked worse than average.
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