Hannibal pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Hannibal is high; ragweed is high; grass and mugwort are medium. Tomorrow (10 August 2026) levels are similar - ragweed remains high, grass declining, mugwort declining. Over the following five days grass, mugwort, and ragweed will decrease. 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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Hannibal's setting on a bluff-top river town on the Mississippi River supports riverside cottonwood, oak-hickory bluff forest, and farmland grasses as the leading local vegetation, all factoring into the pollen count through the year. Seasonal timing here follows the broader regional pattern typical of this part of the country. Nearby towns with similar terrain tend to see a broadly similar pattern.
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):
Medium
27/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
28/100
-
Ragweed (Ambrosia):
High
55/100
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
21/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
24/100
-
Ragweed (Ambrosia):
High
52/100
Air quality in Hannibal
View air qualityPollen forecast for neighborhoods and landmarks in Hannibal
Frequently Asked Questions
Is pollen high in Hannibal right now?
On 9 August 2026, overall pollen levels in Hannibal are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Hannibal tomorrow?
On 10 August 2026, pollen conditions in Hannibal will be different from today, with ambrosia at high levels and grass, artemisia continuing to decline
Is pollen expected to decrease in Hannibal this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Hannibal?
On 9 August 2026, Ambrosia is the dominant pollen source in Hannibal. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in Hannibal?
How often is the Hannibal pollen forecast updated?
The Hannibal pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Hannibal 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 Hannibal 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 Hannibal, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Hannibal.
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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.