Port Richey Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Port Richey is high; ragweed is high; grass, mugwort, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) grass remains low, mold (alternaria) remains low, mold (cladosporium) remains low, ragweed declining, mugwort no longer expected.
7-Day Trend
Over the next week grass, mugwort, and mold (cladosporium) will increase; ragweed and mold (alternaria) will decrease.
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Pollen Risk
Today - 11 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 | 22/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 16/100 |
| Ragweed (Ambrosia) | High | 51/100 |
| Mold (Alternaria) | Low | 10/100 |
| Mold (Cladosporium) | Low | 13/100 |
Tomorrow - 12 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 | 4/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 33/100 | |
| Mold (Alternaria) | Low | 13/100 | |
| Mold (Cladosporium) | Low | 16/100 |
Local Environmental Conditions
Around 37% of the area near the heart of Port Richey is woodland, with a good deal of built-up land and some open water. A nearby park adds mown lawns and planted trees to the local pollen mix. Of the trees nearby, oak is the one that matters most for allergies. Grass pollen is significant here, and pigweed contributes weed pollen.
Oak leads the season in early spring, as temperatures climb to around 20°C, and tree pollen reaches its peak. Then come the grasses, strongest in early spring and fading by mid-fall. Pigweed brings a final peak from early summer into early fall. In warm, humid weather from early summer into early winter, mold spores add to the mix, especially after rain.
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Frequently Asked Questions About Pollen in Florida
Is pollen high in Port Richey right now?
On 11 October 2026, overall pollen levels in Port Richey are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Port Richey tomorrow?
On 12 October 2026, pollen conditions in Port Richey will be different from today, with grass at low levels and ambrosia continuing to decline
Is pollen expected to decrease in Port Richey this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while artemisia and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Port Richey?
On 11 October 2026, Ambrosia is the dominant pollen source in Port Richey. artemisia and grass are also present but at lower levels.
When is pollen season in Port Richey?
How often is the Port Richey pollen forecast updated?
The Port Richey pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Port Richey 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 Port Richey 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 Port Richey, 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).
