Hilton Head Island pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Hilton Head Island is medium; ragweed is medium; grass is low. Tomorrow (10 August 2026) levels are similar - grass remains low, ragweed declining, mugwort at low levels. Over the following five days grass and ragweed will increase; mugwort will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Hilton Head Island sits on a low-country barrier island on the South Carolina coast, where the dominant vegetation is a mix of maritime live oak with Spanish moss, palmetto, and salt marsh cordgrass, shaping the local pollen profile across the seasons. Seasonal timing here follows the broader regional pattern typical of this part of the country. Residents who spend time outdoors around Hilton Head Island typically notice the shift as each season turns over.

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

    22/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Medium

    29/100

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

    15/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    5/100

  • Ragweed (Ambrosia):

    Low

    22/100

Air quality in Hilton Head Island

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Frequently Asked Questions

Is pollen high in Hilton Head Island right now?

On 9 August 2026, overall pollen levels in Hilton Head Island are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Hilton Head Island tomorrow?

On 10 August 2026, pollen conditions in Hilton Head Island 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 Hilton Head Island this week?

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while ambrosia and grass pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Hilton Head Island?

On 9 August 2026, Ambrosia is the dominant pollen source in Hilton Head Island. grass are also present but at lower levels. artemisia and cypress are not currently active.

When is pollen season in Hilton Head Island?
Pollen season in Hilton Head Island starts with cedar and elm in February with oak following close behind through March and April. Grass pollen then peaks through April and May, and ragweed extends the weed season into September. The warm Southeast climate advances the season compared to more northern US regions.
How often is the Hilton Head Island pollen forecast updated?

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

Does pollen in Hilton Head Island 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 Hilton Head Island 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 Hilton Head Island, 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 Hilton Head Island.

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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.