St. George pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in St. George is medium; mugwort is medium; ragweed is low. Tomorrow (10 August 2026) levels are similar - mugwort remains medium, ragweed increasing, cypress at low levels, grass at low levels. Over the following five days grass, mugwort, and ragweed will increase; cypress will decrease. 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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St. George's parks, including Entrada Park and the Virgin River corridor, feature cottonwood, ash, and introduced trees as the main pollen sources along the river corridor, with exposure varying between these green areas and the more arid urban core. Surrounding Mojave Desert scrub and the red rock canyon landscape contribute seasonal shrub and grass pollen, while the open desert valley allows pollen to disperse widely under prevailing winds.
Today - 9 August
-
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):
Medium
30/100
-
Ragweed (Ambrosia):
Low
7/100
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
9/100
-
Grass (Poaceae):
Low
16/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
47/100
-
Ragweed (Ambrosia):
Medium
26/100
Air quality in St. George
View air qualityFrequently Asked Questions
Is pollen high in St. George right now?
On 9 August 2026, overall pollen levels in St. George are moderate. Artemisia is the main contributor to airborne pollen, while ambrosia remain at lower levels
Will pollen levels change in St. George tomorrow?
On 10 August 2026, pollen conditions in St. George will be different from today, with artemisia at medium levels, cypress at low levels, grass at low levels and ambrosia increasing
Is pollen expected to decrease in St. George this week?
According to the five-day outlook, cypress pollen levels are expected to gradually decrease, while ambrosia, artemisia, and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in St. George?
On 9 August 2026, Artemisia is the dominant pollen source in St. George. ambrosia are also present but at lower levels. cypress and grass are not currently active.
When is pollen season in St. George?
How often is the St. George pollen forecast updated?
The St. George pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in St. George 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 St. George 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 St. George, 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?
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Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for St. George.
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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.