Rio de Janeiro pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Rio de Janeiro are low. Cypress is the main contributor to airborne pollen

On 17 July 2026, pollen conditions in Rio de Janeiro will be similar to today, with cypress at low levels

According to the five-day outlook, cypress pollen levels will increase later in the week.

On 16 July 2026, Cypress is the dominant pollen source in Rio de Janeiro. amaranthaceae and willow are not currently active.

Rio de Janeiro's pollen season runs largely year-round in the tropical climate, though tree pollen from native Atlantic Forest species peaks through the drier months from May to September. Grass pollen from urban open spaces contributes throughout the year, while the wet summer season from December to March brings frequent rainfall that periodically suppresses dispersal across the city.

The Rio de Janeiro pollen forecast is updated four times daily. See the timestamp below for the most recent update.

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.

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 Rio de Janeiro, 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.