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
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
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Providence
View Providence allergy season guide →
RI
Cranston
View Cranston allergy season guide →
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Warwick
View Warwick allergy season guide →
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Pawtucket
View Pawtucket allergy season guide →
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East Providence
View East Providence allergy season guide →
Latest PollyMap reports for Rhode Island
Partner Program
Become a PollyMap Collection Partner in Rhode Island
We work with allergy clinics, naturopathic clinics, universities, and qualified environmental health professionals to build the most reliable, locally-collected pollen network in America.
Partner benefits
- Dedicated local partner profile on PollyMap
- Local exposure to thousands of allergy searchers
- Backlinks from your city and state guide pages
- Lead generation from local allergy patients
- Featured on every local PollyMap report
- Recognition as a pollen data collection center
- Collaboration on local pollen research and reports
Partner requirements
- Receive a PollyKit weekly by mail
- Hang the PollyKit collector for 24–48 hours
- Mail the sample back weekly using prepaid packaging
- Maintain a consistent collection schedule year-round
Test the air at your address
Curious what's actually in the air at your Rhode Island home or office?
The PollyKit is the easiest air-sampling kit on the market — collect outdoor pollen and airborne mold indoors at your home, office, classroom or rental, then mail it in for a full lab report. Just $39.99.
- Outdoor pollen counts
- Indoor airborne mold
- Lab-analyzed results
- Ships nationwide
What's in the box
- Air sampling rodsx2
- Indoor mold slidex1
- Prepaid lab returnincluded
- Personal results report3–5 days
The only consumer kit that pairs outdoor pollen with indoor airborne mold sampling.
Frequently asked questions
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