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

Today (25 June) pollen in St. George is low; grass is low. Tomorrow (26 June 2026) levels are similar. Over the following five days grass 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

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

St. George's parks, including Entrada Park and the Virgin River corridor, feature cottonwood, ash, and introduced trees as the main pollen sources along the river corridor, with exposure varying between these green areas and the more arid urban core. Surrounding Mojave Desert scrub and the red rock canyon landscape contribute seasonal shrub and grass pollen, while the open desert valley allows pollen to disperse widely under prevailing winds.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    4/100

  • Willow (Salicaceae):

    None

    0/100

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 - 26 June

  • 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

Frequently Asked Questions

Is pollen high in St. George right now?

On 25 June 2026, overall pollen levels in St. George are low. Grass is the main contributor to airborne pollen

Will pollen levels change in St. George tomorrow?

On 26 June 2026, pollen conditions in St. George will be similar to today, with grass at low levels

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

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

Which pollen types are currently active in St. George?

On 25 June 2026, Grass is the dominant pollen source in St. George. cypress, willow, and hazel are not currently active.

When is pollen season in St. George?
St. George's pollen season opens with cottonwood along the Virgin River from late February, followed by ash and introduced trees through March and April. Grass pollen peaks through May and June. The enclosed red rock canyon setting concentrates pollen under calm conditions, while surrounding Mojave Desert scrub contributes seasonal shrub pollen. The hot, dry desert climate means the summer largely suppresses mid-season pollen after June.
How often is the St. George pollen forecast updated?

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

Does pollen in St. George 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. George 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. George, 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?

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Check pollen in other popular cities:

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Data provided by Airmine — Last update: 25 Jun 2026, 09:02 CET (Data is updated four times daily.)

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

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.