Oklahoma has one of the most aggressive pollen seasons in the US. Mountain cedar dominates winter and early spring, oak and elm peak in April, and ragweed hits hard from August through October.
Peak pollen season in Oklahoma: March–October. Primary allergens: Cedar/JuniperOakRagweed
Tree pollen is the first major allergen each year in Oklahoma, typically starting in early spring with cedar and alder, followed by oak and birch through May.
Grass pollen takes over in late spring through early summer, peaking from May to July depending on location within the state.
Ragweed dominates fall allergies in Oklahoma, typically from August through October. It's the most widespread fall allergen in the US.
The pollen count in Oklahoma varies by city and season. Peak pollen season runs March–October. Select a city above for live data.
Pollen levels vary across Oklahoma. Cities in warmer, more humid areas typically see higher counts. Check individual city pages for current levels.
Pollen season in Oklahoma peaks in March–October. Tree pollen starts in late winter, followed by grass in summer and ragweed in fall.