Belém pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Belém is none
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress, grass, 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 |
Local Environmental Conditions
Belém's Amazonian urban vegetation features açaí palm and mango as the main tree pollen sources, with exposure varying between the city's green spaces and the more built-up centre. Surrounding Amazon floodplain vegetation contributes substantial year-round pollen, while frequent tropical rainfall periodically suppresses dispersal and the wet season from December to June brings the most regular interruptions to exposure throughout.
Belém's pollen season runs year-round in the wet equatorial climate, with native rainforest species including açaí palm and mango contributing continuously. Exposure is highest during the drier months from July to November when rainfall is less frequent, while the intense wet season from December to June brings almost daily rainfall that regularly suppresses pollen dispersal across the Amazon delta city.
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Frequently Asked Questions About Pollen in Pará
Is pollen high in Belém right now?
Currently, there is no significant pollen in Belém.
Will pollen levels change in Belém tomorrow?
On 21 September 2026, pollen conditions in Belém will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Belém this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Belém?
On 20 September 2026, there are no significant pollen types in Belém.
When is pollen season in Belém?
How often is the Belém pollen forecast updated?
The Belém pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Belém 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 Belém 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 Belém, 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).
