West Whittier, West Whittier-Los Nietos Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in West Whittier, West Whittier-Los Nietos is high; ragweed is high; grass, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort, mold (alternaria), and mold (cladosporium) will increase; ragweed will decrease; grass will remain stable.
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Pollen Risk
Today - 6 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 | 15/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | High | 59/100 |
| Alternaria | Low | 15/100 |
| Cladosporium | Low | 12/100 |
Tomorrow - 7 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 | 12/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | High | 56/100 | |
| Alternaria | Low | 15/100 | |
| Cladosporium | Low | 12/100 |
Local Environmental Conditions
The landscape around this location in West Whittier-Los Nietos is densely built up. Lawns and planted trees in a nearby park add to local grass and tree pollen. The allergenic tree mix nearby includes oak and plane tree. Grass pollen is significant here, and mugwort and pigweed contribute weed pollen.
Tree pollen peaks in mid-spring, when the weather warms to around 15°C and oak and plane tree are in full flower. Then come the grasses, strongest in late spring and fading by early fall. Later, mugwort and pigweed keep weed pollen in the air through summer. Rain is heaviest in winter, often giving short breaks from high pollen levels.
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Frequently Asked Questions About Pollen in California
Is pollen high in West Whittier-Los Nietos right now?
On 6 October 2026, overall pollen levels in West Whittier-Los Nietos are high. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in West Whittier-Los Nietos tomorrow?
On 7 October 2026, pollen conditions in West Whittier-Los Nietos will be similar to today, with grass at low levels, ambrosia at high levels
Is pollen expected to decrease in West Whittier-Los Nietos this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while artemisia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in West Whittier-Los Nietos?
On 6 October 2026, Ambrosia is the dominant pollen source in West Whittier-Los Nietos. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in West Whittier-Los Nietos?
How often is the West Whittier-Los Nietos pollen forecast updated?
The West Whittier-Los Nietos pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in West Whittier-Los Nietos 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 West Whittier-Los Nietos 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 West Whittier-Los Nietos, 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. |
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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).
