Oklahoma pollen and allergy seasons
Oklahoma has a mountain cedar season in winter, oak and grass in spring, and a very heavy ragweed season in the fall.
Twelve month pollen calendar
What is active in August
Cities in Oklahoma
No tracked cities yet for Oklahoma.
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
Pollen is only half of what's in the air. See today's air quality in Oklahoma for ozone, dust, and smoke readings by city.
The Oklahoma allergy season
Allergy levels in Oklahoma peak in September, when ragweed pollen runs highest. The season moves through tree pollen around January, grass in May, weed pollen such as ragweed in September. Levels start to climb around January. The lowest pollen levels of the year arrive in November.
Common questions
When does allergy season start in Oklahoma?
Pollen levels in Oklahoma usually begin climbing in January and reach their highest point in September.
What is the worst month for allergies in Oklahoma?
September is typically the worst month in Oklahoma, driven by ragweed pollen.
When does ragweed season end in Oklahoma?
Ragweed pollen in Oklahoma usually fades by the end of November, after the first hard frost in colder areas.
When is the best time for allergies in Oklahoma?
November usually brings the lowest pollen levels of the year in Oklahoma.