Kentfield Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (7 October) pollen in Kentfield is high; ragweed is high; mold (cladosporium) is moderate; grass, mugwort, and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (8 October 2026) grass remains low, mold (alternaria) remains low, mold (cladosporium) remains moderate, ragweed declining, mugwort no longer expected.
7-Day Trend
Over the next week mugwort will increase; grass, ragweed, mold (alternaria), and mold (cladosporium) will decrease.
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Pollen Risk
Today - 7 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) | Low | 2/100 |
| Ragweed (Ambrosia) | High | 55/100 |
| Alternaria | Low | 14/100 |
| Cladosporium | Moderate | 31/100 |
Tomorrow - 8 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 | 8/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 47/100 | |
| Alternaria | Low | 13/100 | |
| Cladosporium | Moderate | 27/100 |
Local Environmental Conditions
The area around the heart of Kentfield is heavily wooded, with some built-up land. Among allergenic trees nearby, oak leads, followed by hazel and maple. Grasses are a major source, with plantain and mugwort adding to the weed pollen load. Compared with most places, oak is especially widespread here, which makes it one of the key local allergens.
The pollen year starts in late winter, when hazel flowers. Tree pollen peaks in mid-spring, when the weather warms to around 10°C and oak and maple are in full flower. Grass pollen follows, peaking in early summer and easing off by early fall. Plantain and mugwort bring a final peak from mid-spring into early fall. The oak period in mid-spring is usually the most intense time of year here.
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Frequently Asked Questions About Pollen in California
Is pollen high in Kentfield right now?
On 7 October 2026, overall pollen levels in Kentfield are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Kentfield tomorrow?
On 8 October 2026, pollen conditions in Kentfield will be different from today, with grass at low levels and ambrosia continuing to decline
Is pollen expected to decrease in Kentfield this week?
According to the five-day outlook, ambrosia and grass 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 Kentfield?
On 7 October 2026, Ambrosia is the dominant pollen source in Kentfield. artemisia and grass are also present but at lower levels.
When is pollen season in Kentfield?
How often is the Kentfield pollen forecast updated?
The Kentfield pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Kentfield 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 Kentfield 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 Kentfield, 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. |
Get More in the Airmine Pollen app
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).
