Herriman pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Herriman is medium; grass is medium. Tomorrow (17 July 2026) levels are similar - grass remains medium, ragweed at low levels. 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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Herriman's Salt Lake Valley Utah setting features cottonwood, Gambel oak, and mountain mahogany as the main pollen sources, with exposure varying between the Oquirrh Mountain foothills residential areas and the more built-up commercial corridors along Mountain View Corridor Highway. The Oquirrh Mountain backdrop creates distinct mountain-valley pollen gradients, while the Butterfield Canyon creek corridor provides locally significant green space and the rapid development of former agricultural land is changing local pollen dynamics significantly.

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):

    Medium

    29/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    35/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    1/100

Air quality in Herriman

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Frequently Asked Questions

Is pollen high in Herriman right now?

On 16 July 2026, overall pollen levels in Herriman are moderate. Grass is the main contributor to airborne pollen

Will pollen levels change in Herriman tomorrow?

On 17 July 2026, pollen conditions in Herriman will be different from today, with ambrosia at low levels, grass at medium levels

Is pollen expected to decrease in Herriman this week?

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

Which pollen types are currently active in Herriman?

On 16 July 2026, Grass is the dominant pollen source in Herriman. willow, alder, ambrosia, artemisia, birch, cypress, and oak are not currently active.

When is pollen season in Herriman?
Herriman's Salt Lake Valley setting in Utah produces a season opening with elm and cottonwood in March before oak peaks through April and May. Grass from surrounding Utah valley farmland peaks through May and June before mugwort extends exposure into September. The Wasatch Mountain and Oquirrh Mountain backdrop concentrates pollen under certain wind conditions, while the dry intermountain climate means fewer rainfall interruptions than in more humid US cities.
How often is the Herriman pollen forecast updated?

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

Does pollen in Herriman 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 Herriman 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 Herriman, 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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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 Herriman.

For long term forecasts and maps, see the Airmine app

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