RI · Allergy Season Guide
Rhode Island Allergy Season Guide
Rhode Island experiences a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers.
Summary
Rhode Island has 0 active PollyMap collection sites, and is seeking partners in 5 additional cities. Tree pollen typically dominates early spring, grass pollen peaks in late spring and early summer, and weed pollen (including ragweed) extends from late summer through fall.
PollyMap collection status across Rhode Island
While we find a local clinic
Test the air at your own home in Rhode Island
No allergy clinic is reporting from Rhode Island yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
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See which pollen and mold are in your yard this season.
Or hang it indoors
Check bedrooms and living spaces for mold, dust mites and more.
Statewide allergy overview
Rhode Island experiences a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers.
Birch, oak, maple, and beech produce an intense April-May tree season. Grass pollen peaks in June, and ragweed lasts from mid-August through October.
Humid summers, dense tree cover, and heavy leaf decay drive elevated Alternaria and Cladosporium counts from late summer into fall.
Allergy patterns vary by elevation and proximity to coast or mountains within Rhode Island, but most of the state shares a common seasonal rhythm of spring tree pollen, summer grass pollen, and late-summer to fall weed pollen.
Rhode Island allergy calendar
Month-by-month intensity for the four major airborne allergen categories.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | Low | Mod | High | V.High | V.High | High | Mod | Low | Low | Low | Low | Low |
| Grass | — | — | Low | Mod | V.High | V.High | High | Mod | Low | Low | — | — |
| Weed | Low | Low | Low | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Low | Low | Mod | Mod | High | High | High | V.High | V.High | V.High | Mod | Low |
Top weed pollens
Top airborne molds
Major city guides in Rhode Island
RI
Providence
View Providence allergy season guide →
RI
Cranston
View Cranston allergy season guide →
RI
Warwick
View Warwick allergy season guide →
RI
Pawtucket
View Pawtucket allergy season guide →
RI
East Providence
View East Providence allergy season guide →
Latest PollyMap reports for Rhode Island
Frequently asked questions
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