Low
Pollen is low — most people won't notice
Grass pollen is the main trigger · Tomorrow → · Updated 23 hours ago
Today in Peoria: grass pollen is very low, tree pollen is none, weed pollen is none. Overall score: 6/100. Allergies are unlikely for most people right now. Tomorrow is expected to be about the same. Updated at 11:01 PM.
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Pollen levels in Peoria are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: None. Grass pollen: Very Low. Weed pollen: None.
Tomorrow's pollen forecast for Peoria is expected to be about the same, with low pollen conditions.
Grass pollen is the highest supported pollen type in Peoria today. Grass pollen is very low.
Tree pollen in Peoria is none today.
Grass pollen in Peoria is very low today.
Weed pollen in Peoria is none today.
Tomorrow's pollen forecast for Peoria is expected to be about the same, with low pollen conditions.
Peoria, Arizona sits in the Sonoran Desert northwest of Phoenix, where a hot, arid climate and extended growing season create a nearly year-round allergy environment rather than sharply defined seasons.
Tree pollen is the earliest major trigger, typically emerging in February and peaking from March through April. Mulberry, olive, ash, cottonwood, mesquite, and palo verde are among the heaviest local contributors, with mesquite often extending activity well into late spring.
As trees taper, grass pollen takes over from April through summer and can persist into early fall thanks to irrigated lawns; Bermuda grass is the dominant culprit, alongside rye and Johnson grass.
Weed season ramps up in late summer and runs through November, driven by ragweed, russian thistle (tumbleweed), careless weed (pigweed), and sagebrush. Overlap between late-season grasses and early weeds in August and September often intensifies symptoms for sensitive residents.
Non-pollen allergens also play a significant role: chronic dust from the surrounding desert, windblown particulates during haboobs, indoor and outdoor mold around irrigated landscaping, and regional air pollution trapped by valley geography all contribute.
Overall, Peoria's allergy profile is defined by prolonged exposure, dust-heavy air, and substantial overlap between desert flora and cultivated landscaping.