Port Saint Joe pollen forecast — Site of the signing of Florida's First Constitution neighborhood
Pollen Today
Today (20 September) pollen in Site of the signing of Florida's First Constitution, Port Saint Joe is moderate; ragweed is moderate; grass and mugwort are low.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort remains low, ragweed remains moderate, grass increasing.
7-Day Trend
Over the next week grass, mugwort, and ragweed will decrease.
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Pollen Risk
Today - 20 September
| 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 | 14/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 4/100 |
| Ragweed (Ambrosia) | Moderate | 35/100 |
Tomorrow - 21 September
| 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) | Moderate | 26/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 17/100 | |
| Ragweed (Ambrosia) | Moderate | 48/100 |
Local Environmental Conditions
Red maple and bald cypress crowd the water's edge, typical of the area's spring-fed river corridors, not far from here. Located nearby, this area has sand pine and turkey oak dominating the treeline, both typical of this area's scrub habitat. Nearby, within the neighborhood, this park's mix of turf and landscaped trees contributes a modest grass and ragweed pollen load.
Average temperatures range from about 15°C in January to 29°C in August, and annual rainfall here totals about 1619 mm, concentrated mostly in the warmer months around August. Expect pollen activity to start building from around February, tracking the rise in temperature out of the January low.
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Frequently Asked Questions About Pollen in Florida
Is pollen high in Port Saint Joe right now?
On 20 September 2026, overall pollen levels in Port Saint Joe are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Port Saint Joe tomorrow?
On 21 September 2026, pollen conditions in Port Saint Joe will be different from today, with ambrosia at moderate levels, artemisia at low levels and grass increasing
Is pollen expected to decrease in Port Saint Joe this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Port Saint Joe?
On 20 September 2026, Ambrosia is the dominant pollen source in Port Saint Joe. artemisia and grass are also present but at lower levels.
When is pollen season in Port Saint Joe?
How often is the Port Saint Joe pollen forecast updated?
The Port Saint Joe pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Port Saint Joe 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 Saint Joe 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 Saint Joe, 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 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
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).
