Tucson, AZ Mesquite Pollen
Mesquite pollen in Tucson usually peaks around April to May, reaching Moderate at its worst. Tucson sits in the Sonoran Desert, where native and planted trees stretch the allergy season across most of the year: juniper and cypress in winter, olive and mulberry in spring, and mesquite into early summer. Pima County restricts the trees that cause the worst of it.
Mesquite is a signature Sonoran Desert allergen around Tucson, pollinating from spring into early summer with a second push after the monsoon rains.
Mesquite in Tucson today
Tuesday, July 28, 2026
Mesquite isn't picked up by the live pollen sensors near Tucson, so there's no daily number for it. Based on the season, July is typically None for Mesquite.
See Tucson's full pollen report and 5-day forecast →Mesquite pollen by month in Tucson
How mesquite usually runs across the year. The current month is outlined.
Managing mesquite season in Tucson
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 Tucson
- Tucson olive pollen — peaks April.
- Tucson juniper pollen — peaks January to February.
- Tucson mulberry pollen — peaks March.
- Tucson grass pollen — peaks April to September.
- Tucson pollen calendar — every allergen, month by month.
- Tucson pollen count today — live tree, grass, and weed levels with a 5-day forecast.
- Arizona pollen season — the statewide calendar and other cities.
Get Tucson pollen alerts
We send a free email whenever pollen is High or Very High in Tucson. No spam, no daily emails when pollen is low. Just a heads-up on the days that matter.
Sign up for free alertsSeasonal pattern based on Arizona pollen data and local sources. Today's reading updated daily. MyPollenPal