Tucson, AZ Grass Pollen
Grass pollen in Tucson usually peaks around April to September, 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.
Bermuda grass keeps counts up from spring into early summer across the Tucson basin.
Grass in Tucson today
Tuesday, July 28, 2026
Grass pollen by month in Tucson
How grass usually runs across the year. The current month is outlined.
Managing grass season in Tucson
If grass is your trigger, start a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) a week or two before the April to September 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 grass is really what you react to and talk through longer-term options like allergy shots.
Sources
More pollen in Tucson
- Tucson olive pollen — peaks April.
- Tucson juniper pollen — peaks January to February.
- Tucson mulberry pollen — peaks March.
- Tucson mesquite pollen — peaks April to May.
- 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.
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Sign up for free alertsSeasonal pattern based on Arizona pollen data and local sources. Today's reading updated daily. MyPollenPal