Glendale pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Glendale is low; grass, mugwort, and ragweed are low. Tomorrow (31 August 2026) levels are similar. Over the following five days 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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Glendale's desert setting in the Phoenix metro area means introduced mulberry, olive, and eucalyptus 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 Sonoran Desert scrub and agricultural land contribute seasonal grass and shrub pollen under prevailing winds across the Salt River Valley.

Today - 30 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    13/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    7/100

  • Ragweed (Ambrosia):

    Low

    21/100

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 - 31 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    14/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    7/100

  • Ragweed (Ambrosia):

    Low

    22/100

Air quality in Glendale

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Frequently Asked Questions

Is pollen high in Glendale right now?

On 30 August 2026, overall pollen levels in Glendale are low. Grass is the main contributor to airborne pollen, while ambrosia and artemisia remain at lower levels

Will pollen levels change in Glendale tomorrow?

On 31 August 2026, pollen conditions in Glendale will be similar to today, with grass at low levels, ambrosia at low levels, artemisia at low levels

Is pollen expected to decrease in Glendale this week?

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

Which pollen types are currently active in Glendale?

On 30 August 2026, Grass is the dominant pollen source in Glendale. ambrosia and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in Glendale?
Glendale's pollen season in Arizona is dominated by introduced olive and mulberry from February through April, producing intense early-season tree pollen. Native Sonoran Desert species including palo verde and mesquite contribute from March through May. The long, hot, dry summer largely suppresses mid-season pollen, with a secondary grass peak possible after monsoon rains. The flat Salt River Valley basin concentrates pollen under calm spring conditions.
How often is the Glendale pollen forecast updated?

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

Does pollen in Glendale 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 Glendale 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 Glendale, 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: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Glendale.

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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.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.