Block Island pollen forecast - today, tomorrow and the week ahead
Today (30 August) pollen in Block Island is high; ragweed is high; grass and mugwort are moderate. Tomorrow (31 August 2026) levels are similar - grass remains moderate, ragweed remains high, mugwort declining. Over the following five days grass, mugwort, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Block Island's setting on a small glacial island 12 miles off the Rhode Island coast supports coastal grassland and heath, bayberry, and wild rose as the leading local vegetation, all factoring into the pollen count through the year. Local parks and open ground tend to see higher pollen counts than the denser urban core. As with most of the region, counts tend to build gradually rather than spike overnight.
Today - 30 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Moderate
41/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Moderate
30/100
-
Ragweed (Ambrosia):
High
62/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 31 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Moderate
32/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
18/100
-
Ragweed (Ambrosia):
High
51/100
Air quality in Block Island
View air qualityFrequently Asked Questions
Is pollen high in Block Island right now?
On 30 August 2026, overall pollen levels in Block Island are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Block Island tomorrow?
On 31 August 2026, pollen conditions in Block Island will be different from today, with ambrosia at high levels, grass at moderate levels and artemisia continuing to decline
Is pollen expected to decrease in Block Island this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Block Island?
On 30 August 2026, Ambrosia is the dominant pollen source in Block Island. artemisia and grass are also present but at lower levels. cypress are not currently active.
When is pollen season in Block Island?
How often is the Block Island pollen forecast updated?
The Block Island pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Block Island come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Block Island based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Block Island, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Want to see pollen forecasts for other cities in United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 30 August 2026 at 08:36 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Block Island.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.