Aliso Viejo pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Aliso Viejo is medium; mugwort and ragweed are medium; cypress and grass are low. Tomorrow (10 August 2026) levels are similar - grass remains low, mugwort remains medium, ragweed remains medium. Over the following five days grass, mugwort, and ragweed will increase; cypress will remain stable. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Aliso Viejo's Orange County California coastal hillside setting features coastal sage scrub, Toyon, and Torrey pine as the main pollen sources, with exposure varying between the native coastal sage scrub canyon slopes and the more built-up residential and commercial corridors along Pacific Park Drive. The Aliso and Wood Canyons Wilderness Park provides a particularly significant native coastal sage scrub pollen source, creating distinct canyon-to-ridgeline pollen gradients across this planned hillside community.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
3/100
-
Grass (Poaceae):
Low
14/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
42/100
-
Ragweed (Ambrosia):
Medium
35/100
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):
None
0/100
-
Grass (Poaceae):
Low
13/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
40/100
-
Ragweed (Ambrosia):
Medium
34/100
Air quality in Aliso Viejo
View air qualityFrequently Asked Questions
Is pollen high in Aliso Viejo right now?
On 9 August 2026, overall pollen levels in Aliso Viejo are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia, cypress, and grass remain at lower levels
Will pollen levels change in Aliso Viejo tomorrow?
On 10 August 2026, pollen conditions in Aliso Viejo will be different from today, with ambrosia at medium levels, artemisia at medium levels, grass at low levels
Is pollen expected to decrease in Aliso Viejo this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Aliso Viejo?
On 9 August 2026, Ambrosia is the dominant pollen source in Aliso Viejo. artemisia, cypress, and grass are also present but at lower levels.
When is pollen season in Aliso Viejo?
How often is the Aliso Viejo pollen forecast updated?
The Aliso Viejo pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Aliso Viejo 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 Aliso Viejo 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 Aliso Viejo, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Aliso Viejo.
Get the full experience in the Airmine app.
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.