Ercolano pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Ercolano is high; mugwort is high; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass and mugwort will decrease; cypress and willow will remain stable.
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Features and forecast availability vary by region.
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 | 2/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | High | 67/100 |
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) | Low | 3/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 68/100 |
Local Environmental Conditions
Ercolano's Bay of Naples waterfront and the Vesuvius archaeological site backdrop lemon and pine dominate locally, and grass from nearby Campania farmland extends exposure into spring. Hot, dry summer conditions then suppress pollen production for months.
Ercolano sees lemon and pine dominate the early pollen season, with grass adding to counts through spring before the dry summer shuts things down; overall the season runs January to June. Exposure tends to be sharper and shorter-lived than in more temperate parts of Europe.
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Frequently Asked Questions About Pollen in Campania
Is pollen high in Ercolano right now?
On 20 September 2026, overall pollen levels in Ercolano are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Ercolano tomorrow?
On 21 September 2026, pollen conditions in Ercolano will be similar to today, with grass at low levels, artemisia at high levels
Is pollen expected to decrease in Ercolano this week?
According to the five-day outlook, grass and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Ercolano?
On 20 September 2026, Artemisia is the dominant pollen source in Ercolano. grass are also present but at lower levels. cypress and willow are not currently active.
When is pollen season in Ercolano?
How often is the Ercolano pollen forecast updated?
The Ercolano pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Ercolano 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 Ercolano 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 Ercolano, 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).
