Phoenix, AZ Mesquite Pollen
Mesquite pollen in Phoenix usually peaks around April to May, reaching Moderate at its worst. Phoenix has an allergy season that runs most of the year, driven by desert trees. Juniper and cypress start in winter, olive and mulberry peak in spring, and mesquite carries into early summer. These trees are so allergenic that the city restricts planting some of them.
Mesquite is a native desert tree that pollinates from spring into early summer, with a second push after the monsoon rains.
Mesquite in Phoenix today
Monday, July 27, 2026
Mesquite isn't picked up by the live pollen sensors near Phoenix, so there's no daily number for it. Based on the season, July is typically None for Mesquite.
See Phoenix's full pollen report and 5-day forecast →Mesquite pollen by month in Phoenix
How mesquite usually runs across the year. The current month is outlined.
Managing mesquite season in Phoenix
If mesquite is your trigger, start a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) a week or two before the April to May peak, rather than waiting for symptoms. Keep windows closed on high-count mornings, shower and change clothes after time outside, and run the AC on recirculate in the car.
When symptoms don't ease with over-the-counter medicine, an allergist in Arizona can test whether mesquite is really what you react to and talk through longer-term options like allergy shots.
Sources
- Huerta-Ocampo JA, Batista-Roche LG, Morales-Amparano MB, et al. "Identification of Allergenic Proteins in Velvet Mesquite (Prosopis velutina) Pollen: An Immunoproteomics Approach." Life (Basel). 2022. doi:10.3390/life12091421
- Thermo Fisher Scientific. "Mesquite Pollen (t20)." Allergen Encyclopedia. https://www.thermofisher.com/phadia/us/en/resources/allergen-encyclopedia/t20.html
More pollen in Phoenix
- Phoenix olive pollen — peaks April.
- Phoenix juniper pollen — peaks January to February.
- Phoenix mulberry pollen — peaks March.
- Phoenix grass pollen — peaks April to September.
- Phoenix pollen calendar — every allergen, month by month.
- Phoenix pollen count today — live tree, grass, and weed levels with a 5-day forecast.
- Arizona pollen season — the statewide calendar and other cities.
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Sign up for free alertsSeasonal pattern based on Arizona pollen data and local sources. Today's reading updated daily. MyPollenPal