St. Francisville pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in St. Francisville is low; grass and ragweed are low. Tomorrow (17 July 2026) levels are similar. Over the following five days grass and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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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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Set on bluffs above the Mississippi River in the Felicianas, St. Francisville's landscape is defined by live oak with Spanish moss alongside southern magnolia and loblolly pine, the main contributors to seasonal pollen exposure. Wind patterns across the area help determine how far pollen travels from these source plants. Residents who spend time outdoors around St. Francisville typically notice the shift as each season turns over.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    12/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    11/100

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 - 17 July

  • 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

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    1/100

Air quality in St. Francisville

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Frequently Asked Questions

Is pollen high in St. Francisville right now?

On 16 July 2026, overall pollen levels in St. Francisville are low. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels

Will pollen levels change in St. Francisville tomorrow?

On 17 July 2026, pollen conditions in St. Francisville will be similar to today, with grass at low levels, ambrosia at low levels

Is pollen expected to decrease in St. Francisville this week?

According to the five-day outlook, grass and ambrosia pollen levels will increase later in the week.

Which pollen types are currently active in St. Francisville?

On 16 July 2026, Grass is the dominant pollen source in St. Francisville. ambrosia are also present but at lower levels. birch, cypress, oak, willow, alder, and artemisia are not currently active.

When is pollen season in St. Francisville?
St. Francisville's tree pollen season begins with oak and pine from January with cedar taking the lead through February. Grass follows, peaking through March and April, while pigweed and ragweed keep weed pollen elevated into October. Warm, humid Gulf Coast conditions stretch the spring pollen season longer than in most of the country throughout the year.
How often is the St. Francisville pollen forecast updated?

The St. Francisville pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in St. Francisville 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 St. Francisville 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 St. Francisville, 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.

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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for St. Francisville.

For long term forecasts and maps, see the Airmine app

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