Pollen Count & Forecast for Oklahoma City

Oklahoma City’s spring allergy season (March-May) is dominated by Oak and Sycamore pollen; Oak (Quercus) prolific in Will Rogers Park; Sycamore (Platanus occidentalis) common in Myriad Botanical Gardens. Winter has Mountain Cedar (Juniperus ashei); winds carry it from southern hills. Summer (May-July) sees high Bermuda Grass (Cynodon dactylon) levels along the Oklahoma River. Autumn (August-October) brings heavy Ragweed (Ambrosia) from surrounding plains.

Flat terrain and high winds transport allergens across the prairie; gusts cause sharp spikes in daily counts. Late autumn and spring have elevated Mould (Alternaria, Cladosporium) spores; these come from leaf litter near Lake Hefner and the North Canadian River.