Catalina Foothills pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Catalina Foothills is low; grass is low. Tomorrow (26 June 2026) levels are similar. Over the following five days grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Catalina Foothills's Pima County Arizona suburban setting features saguaro cactus, palo verde, and desert willow as the main native pollen sources alongside residential plantings, with the elevated foothills setting supporting more desert scrub than in lower Tucson. Exposure varies considerably between the native Sonoran Desert wash corridors and the more built-up residential areas, while the Santa Catalina Mountain backdrop creates distinct mountain-desert pollen gradients and the elevation means slightly cooler conditions than lower valley areas.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    4/100

  • Willow (Salicaceae):

    None

    0/100

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 - 26 June

  • 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

Frequently Asked Questions

Is pollen high in Catalina Foothills right now?

On 25 June 2026, overall pollen levels in Catalina Foothills are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Catalina Foothills tomorrow?

On 26 June 2026, pollen conditions in Catalina Foothills will be similar to today with no significant pollen expected.

Is pollen expected to decrease in Catalina Foothills this week?

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

Which pollen types are currently active in Catalina Foothills?

On 25 June 2026, Grass is the dominant pollen source in Catalina Foothills. willow, hazel, and cypress are not currently active.

When is pollen season in Catalina Foothills?
Catalina Foothills's Sonoran Desert suburban setting north of Tucson produces a season opening in January with palo verde and desert willow before grass from surrounding desert grassland peaks through March and April. Monsoon season from July through September brings a second grass and mugwort peak, while the elevated foothills setting means the season begins slightly later than in lower Tucson valley areas throughout.
How often is the Catalina Foothills pollen forecast updated?

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

Does pollen in Catalina Foothills 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 Catalina Foothills 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 Catalina Foothills, 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: 25 Jun 2026, 09:02 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Catalina Foothills.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.