Irving, TX Pollen Levels Today

Irving, TX, situated in the heart of North Texas, experiences a prolonged and intense allergy season driven by its humid subtropical climate, mild winters, and hot summers, which together allow pollen-producing plants to thrive nearly year-round.

The allergy calendar kicks off unusually early, with the infamous "cedar fever" caused by mountain cedar (Ashe juniper) peaking from December through February. As winter wanes, tree pollen surges from late February through April, dominated by oak, elm, ash, pecan, mulberry, and cottonwood, often producing the year's highest pollen counts.

Grass pollen follows from April into early fall, with Bermuda, Johnson, rye, and Timothy grasses being the primary offenders, and Bermuda in particular lingering well into autumn. Weed season overlaps heavily, beginning in late summer and extending through November, with ragweed as the leading culprit alongside pigweed, lamb's quarters, and sagebrush. These overlapping cycles—especially the grass-and-weed crossover in late summer—can significantly intensify symptoms.

Beyond pollen, Irving residents contend with year-round mold spores fueled by humidity, dust stirred up by dry spells and regional winds, and elevated ozone and pollution levels common to the Dallas–Fort Worth metroplex.

Overall, Irving's allergy profile is defined by length, diversity, and seasonal overlap.