Henderson pollen forecast - today, tomorrow and the week ahead

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

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Henderson's desert setting in the Las Vegas Valley means introduced olive, mulberry, and cypress trees planted across parks and residential streets are the main allergenic pollen sources, with exposure varying between these irrigated green areas and the more arid urban core. Surrounding Mojave Desert scrub and grassland contribute seasonal shrub and grass pollen under prevailing winds across the valley.

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

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    30/100

  • Ragweed (Ambrosia):

    Low

    5/100

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):

    Low

    5/100

  • Grass (Poaceae):

    Low

    21/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    46/100

  • Ragweed (Ambrosia):

    Low

    20/100

Air quality in Henderson

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Frequently Asked Questions

Is pollen high in Henderson right now?

On 9 August 2026, overall pollen levels in Henderson are moderate. Artemisia is the main contributor to airborne pollen, while ambrosia and grass remain at lower levels

Will pollen levels change in Henderson tomorrow?

On 10 August 2026, pollen conditions in Henderson will be different from today, with ambrosia at low levels, artemisia at medium levels, cypress at low levels, grass at low levels

Is pollen expected to decrease in Henderson this week?

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

Which pollen types are currently active in Henderson?

On 9 August 2026, Artemisia is the dominant pollen source in Henderson. ambrosia and grass are also present but at lower levels. cypress are not currently active.

When is pollen season in Henderson?
Henderson's pollen season is dominated by introduced olive and mulberry from February through April, producing intense early-season tree pollen. Native Mojave Desert species contribute seasonal shrub pollen, while introduced grasses add spring exposure. The long, hot, dry Las Vegas Valley summer largely suppresses mid-season pollen. The flat desert basin concentrates pollen under calm spring conditions, with exposure almost entirely from irrigated urban plantings.
How often is the Henderson pollen forecast updated?

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

Does pollen in Henderson 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 Henderson 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 Henderson, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Henderson.

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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.