Rhode Island pollen and allergy seasons
Rhode Island has a spring tree season and a strong ragweed season in late summer and early fall.
Twelve month pollen calendar
What is active in September
Cities in Rhode Island
No tracked cities yet for Rhode Island.
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 Rhode Island for ozone, dust, and smoke readings by city.
The Rhode Island allergy season
Allergy levels in Rhode Island peak in September, when ragweed pollen runs highest. The season moves through tree pollen around April, grass in June, weed pollen such as ragweed in September. Levels start to climb around March. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Rhode Island?
Pollen levels in Rhode Island usually begin climbing in March and reach their highest point in September.
What is the worst month for allergies in Rhode Island?
September is typically the worst month in Rhode Island, driven by ragweed pollen.
When does ragweed season end in Rhode Island?
Ragweed pollen in Rhode Island usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Rhode Island?
January usually brings the lowest pollen levels of the year in Rhode Island.