Mesquite, TX Pollen Levels Today

Mesquite, TX, located in the humid subtropical climate of the Dallas–Fort Worth metroplex, experiences a long and intense allergy season that spans nearly the entire year due to mild winters and hot, muggy summers.

Tree pollen kicks off the cycle in late winter and early spring, with mountain cedar (Ashe juniper) peaking from December through February, followed by oak, elm, ash, pecan, and mulberry producing heavy pollen loads from March through May. As trees taper off, grass pollen takes over from May through early fall, dominated by Bermuda grass, Johnson grass, and Timothy, with peaks during the hottest months.

Fall brings a punishing weed season from August through November, led by ragweed—particularly abundant across North Texas—alongside pigweed, lamb's quarters, and sagebrush. Overlap between late-season grasses and early fall weeds frequently intensifies symptoms in September.

Non-pollen triggers are also significant: mold spores thrive year-round in the region's humidity, especially after rain, while dust and regional ozone pollution from urban traffic can aggravate respiratory symptoms. Windy conditions common to the plains further disperse airborne allergens.

Overall, Mesquite's allergy profile is defined by near-constant exposure, with cedar, oak, Bermuda grass, and ragweed as the chief offenders driving year-round sensitivity.