Reid Park, Tucson Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Reid Park, Tucson is high; ragweed is high; grass, mugwort, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) grass remains low, mold (alternaria) remains low, mold (cladosporium) remains low, ragweed declining, 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 - 11 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 | 17/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 3/100 |
| Ragweed (Ambrosia) | High | 52/100 |
| Mold (Alternaria) | Low | 18/100 |
| Mold (Cladosporium) | Low | 22/100 |
Tomorrow - 12 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) | Low | 1/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 37/100 | |
| Mold (Alternaria) | Low | 14/100 | |
| Mold (Cladosporium) | Low | 20/100 |
Local Environmental Conditions
The area around this location in Tucson is mostly built-up land, with some open grassland. A nearby park adds mown lawns and planted trees to the local pollen mix. Of the trees nearby, poplar is the one that matters most for allergies. Grasses are a major source, with pigweed and ragweed adding to the weed pollen load.
Tree pollen peaks in late winter, when the weather warms to around 10°C and poplar is in full flower. Grasses take over in late spring and keep pollen in the air into early fall. The season closes with pigweed and ragweed from early summer into early fall. Summer is the wettest time of year, and heavy showers can bring short breaks in pollen.
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Pollen forecast neighborhoods 13 neighborhoods
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Frequently Asked Questions About Pollen in Arizona
Is pollen high in Tucson right now?
On 11 October 2026, overall pollen levels in Tucson are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Tucson tomorrow?
On 12 October 2026, pollen conditions in Tucson will be different from today, with grass at low levels and ambrosia continuing to decline
Is pollen expected to decrease in Tucson this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Tucson?
On 11 October 2026, Ambrosia is the dominant pollen source in Tucson. artemisia and grass are also present but at lower levels.
When is pollen season in Tucson?
How often is the Tucson pollen forecast updated?
The Tucson pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Tucson 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 Tucson 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 Tucson, 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. |
Get More in the Airmine Pollen app
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).
