Gilbert, Arizona Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Gilbert, Arizona is moderate; ragweed, mold (alternaria), and mold (cladosporium) are moderate; grass and mugwort are low.
Pollen Tomorrow
Tomorrow (11 October 2026) ragweed remains moderate, mold (cladosporium) remains moderate, mold (alternaria) declining, grass no longer expected, mugwort no longer expected.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) will increase.
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Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 2/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 4/100 |
| Ragweed (Ambrosia) | Moderate | 49/100 |
| Mold (Alternaria) | Moderate | 30/100 |
| Mold (Cladosporium) | Moderate | 26/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 40/100 | |
| Mold (Alternaria) | Low | 25/100 | |
| Mold (Cladosporium) | Moderate | 26/100 |
Local Environmental Conditions
The center of Gilbert, Arizona is surrounded mainly by built-up land, which covers around 69% of the nearby area, with some bare ground. With the Salt River nearby, riverside trees such as willow and poplar along its banks contribute to the local mix. Poplar heads the list of allergenic trees nearby, ahead of mulberry and willow. Grass pollen is plentiful, while pigweed and ragweed lead among the weeds.
Tree pollen peaks in late winter, when the weather warms to around 15°C and poplar, mulberry and willow are in full flower. Then come the grasses, strongest in mid-spring and fading by mid-fall. The season closes with pigweed and ragweed from early summer into early fall. In this dry climate, pollen can linger in the air for long spells without rain.
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Frequently Asked Questions About Pollen in Arizona
Is pollen high in Gilbert, Arizona right now?
On 10 October 2026, overall pollen levels in Gilbert, Arizona are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Gilbert, Arizona tomorrow?
On 11 October 2026, pollen conditions in Gilbert, Arizona will be different from today, with ambrosia at moderate levels
Is pollen expected to decrease in Gilbert, Arizona this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Gilbert, Arizona?
On 10 October 2026, Ambrosia is the dominant pollen source in Gilbert, Arizona. grass and artemisia are also present but at lower levels.
When is pollen season in Gilbert, Arizona?
How often is the Gilbert, Arizona pollen forecast updated?
The Gilbert, Arizona pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Gilbert, Arizona 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 Gilbert, Arizona 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 Gilbert, Arizona, 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.
Understanding the Scale
The 0–100 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
