Oklahoma City, OK Grass Pollen
Grass pollen in Oklahoma City usually peaks around May, reaching High at its worst. Oklahoma City has one of the longest allergy calendars in the country: cedar in the dead of winter, elm and oak in spring, grass through summer, and a heavy ragweed fall.
Grass pollen runs high from May into summer across the prairie and city lawns.
Grass in Oklahoma City today
Tuesday, July 28, 2026
Grass pollen by month in Oklahoma City
How grass usually runs across the year. The current month is outlined.
Managing grass season in Oklahoma City
If grass is your trigger, start a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) a week or two before the May peak, rather than waiting for symptoms. Keep windows closed on high-count mornings, shower and change clothes after time outside, and run the AC on recirculate in the car.
When symptoms don't ease with over-the-counter medicine, an allergist in Oklahoma can test whether grass is really what you react to and talk through longer-term options like allergy shots.
Sources
More pollen in Oklahoma City
- Oklahoma City ragweed pollen — peaks September.
- Oklahoma City oak pollen — peaks April.
- Oklahoma City mountain cedar pollen — peaks January.
- Oklahoma City elm pollen — peaks February to March.
- Oklahoma City pollen calendar — every allergen, month by month.
- Oklahoma City pollen count today — live tree, grass, and weed levels with a 5-day forecast.
- Oklahoma pollen season — the statewide calendar and other cities.
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Sign up for free alertsSeasonal pattern based on Oklahoma pollen data and local sources. Today's reading updated daily. MyPollenPal