Low
Pollen is low — most people won't notice
Grass pollen is the main trigger · Tomorrow → · Updated 13 hours ago
Today in Phoenix: 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 Phoenix 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 Phoenix is expected to be about the same, with low pollen conditions.
Grass pollen is the highest supported pollen type in Phoenix today. Grass pollen is very low.
Tree pollen in Phoenix is none today.
Grass pollen in Phoenix is very low today.
Weed pollen in Phoenix is none today.
Tomorrow's pollen forecast for Phoenix is expected to be about the same, with low pollen conditions.
Phoenix, Arizona, has one of the most challenging allergy climates in the United States, driven by its hot desert environment, low humidity, and a nearly year-round pollen season that gives local residents little reprieve.
Tree pollen dominates from February through April, with mulberry, olive, ash, cottonwood, juniper, and mesquite producing especially heavy loads—so much so that many municipalities have restricted new plantings of mulberry and olive.
As temperatures climb, grass pollen becomes the primary trigger from late April through summer, with Bermuda grass being by far the most problematic, alongside ryegrass and johnsongrass. Because Bermuda grass can pollinate into the fall, it frequently overlaps with weed season, intensifying symptoms for many sufferers.
Weed pollen peaks from late summer through November, led by ragweed, tumbleweed (Russian thistle), careless weed (pigweed/amaranth), and sagebrush, all well-adapted to the Sonoran Desert.
Beyond pollen, Phoenix residents contend with significant non-pollen triggers: airborne dust from surrounding desert terrain, haboobs during monsoon season, elevated ozone and particulate pollution trapped by the valley's geography, and indoor and outdoor mold spikes following summer rains.
Overall, Phoenix's allergy profile is defined by extended overlapping pollen seasons, desert-specific weeds, and persistent dust and pollution exposure.