San Tan Valley pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in San Tan Valley 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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
San Tan Valley's suburban setting in the Phoenix metro area means introduced olive, mulberry, 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 desert surroundings. Surrounding Sonoran Desert scrub and the San Tan Mountains contribute seasonal shrub and grass pollen under prevailing winds.
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
5/100
-
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 San Tan Valley right now?
On 25 June 2026, overall pollen levels in San Tan Valley are low. Grass is the main contributor to airborne pollen
Will pollen levels change in San Tan Valley tomorrow?
On 26 June 2026, pollen conditions in San Tan Valley will be similar to today with no significant pollen expected.
Is pollen expected to decrease in San Tan Valley this week?
According to the five-day outlook, grass pollen levels will increase later in the week.
Which pollen types are currently active in San Tan Valley?
On 25 June 2026, Grass is the dominant pollen source in San Tan Valley. hazel, cypress, and willow are not currently active.
When is pollen season in San Tan Valley?
How often is the San Tan Valley pollen forecast updated?
The San Tan Valley pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in San Tan Valley 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 San Tan Valley 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 San Tan Valley, 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: 25 Jun 2026, 09:01 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for San Tan Valley.
For long term forecasts and maps, see the Airmine app
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.