Lewiston pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Lewiston is high; ragweed is high; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar - grass remains low, mugwort remains low, ragweed 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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Lewiston sits on the banks of the Androscoggin River, where the dominant vegetation is a mix of eastern white pine, paper birch, and sugar maple, shaping the local pollen profile across the seasons. Exposure varies with proximity to green space versus the more built-up parts of Lewiston. Microclimates within the area can shift the timing slightly from one neighborhood to the next.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
15/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
24/100
-
Ragweed (Ambrosia):
High
56/100
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
1/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
8/100
-
Ragweed (Ambrosia):
Medium
42/100
Air quality in Lewiston
View air qualityPollen forecast for neighborhoods and landmarks in Lewiston
Frequently Asked Questions
Is pollen high in Lewiston right now?
On 9 August 2026, overall pollen levels in Lewiston are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Lewiston tomorrow?
On 10 August 2026, pollen conditions in Lewiston will be different from today, with artemisia at low levels, grass at low levels and ambrosia continuing to decline
Is pollen expected to decrease in Lewiston this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Lewiston?
On 9 August 2026, Ambrosia is the dominant pollen source in Lewiston. artemisia and grass are also present but at lower levels. cypress are not currently active.
When is pollen season in Lewiston?
How often is the Lewiston pollen forecast updated?
The Lewiston pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lewiston 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 Lewiston 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 Lewiston, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Lewiston.
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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.