Rhode Island pollen and allergy seasons

August outlookHigh

Rhode Island has a spring tree season and a strong ragweed season in late summer and early fall.

Twelve month pollen calendar

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F
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LowModerateHighVery high
Dominant species in August
Ragweed
Typical peak in August
mid-August to late-August
Worst month of the year
September
Best month of the year
January

What is active in August

Ragweed
High
Mugwort
Moderate
Grass
Low

Cities in Rhode Island

CityTodayWorst todayTypical in August
WoonsocketHighas of Aug 8MugwortHigh
WarwickModerateas of Aug 8GrassHigh
CranstonModerateas of Aug 8GrassHigh
PawtucketModerateas of Aug 8GrassHigh
RumfordModerateas of Aug 8GrassHigh
LincolnModerateas of Aug 8GrassHigh
East GreenwichModerateas of Aug 8GrassHigh
BarringtonModerateas of Aug 8GrassHigh
ProvidenceLowas of Aug 8GrassHigh
Valley FallsLowas of Aug 8GrassHigh
North SmithfieldLowas of Aug 8MugwortHigh
PascoagLowas of Aug 8GrassHigh
QuidnessettLowas of Aug 8GrassHigh
WarrenLowas of Aug 8GrassHigh
RiversideLowas of Aug 8GrassHigh
CumberlandLowas of Aug 8GrassHigh
TivertonLowas of Aug 8GrassHigh
West WarwickLowas of Aug 8GrassHigh
North ProvidenceLowas of Aug 8GrassHigh
NewportNoneas of Aug 8NoneHigh
Newport EastNoneas of Aug 8NoneHigh
CarolinaNoneas of Aug 8NoneHigh
JamestownNoneas of Aug 8NoneHigh
Shore AcresNoneas of Aug 8NoneHigh
CharlestownNoneas of Aug 8NoneHigh
Little ComptonNoneas of Aug 8NoneHigh
NarragansettNoneas of Aug 8NoneHigh
CoventryNoneas of Aug 8NoneHigh
WakefieldNoneas of Aug 8NoneHigh
North KingstownNoneas of Aug 8NoneHigh
ExeterNoneas of Aug 8NoneHigh
East ProvidenceNo live readingNot availableHigh
Central FallsNo live readingNot availableHigh
ChepachetNo live readingNot availableHigh
New ShorehamNo live readingNot availableHigh
PortsmouthNo live readingNot availableHigh
WesterlyNo live readingNot availableHigh
JohnstonNo live readingNot availableHigh
SmithfieldNo live readingNot availableHigh
MiddletownNo live readingNot availableHigh
Block IslandNo live readingNot availableHigh

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.