Grajaú pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Grajaú is high; cypress is high. Tomorrow (17 July 2026) levels are similar. Over the following five days cypress will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Grajaú commands the southern Maranhão cerrado-caatinga transitional zone as a remote interior municipality, where native cerrado trees, babaçu palm, and caatinga scrub are the main pollen sources. The wet season from October to April brings frequent rainfall interruptions, while the dry season concentrates pollen dispersal and the transitional zone contributes a distinctive mixed pollen environment throughout.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
High
75/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Amaranthaceae:
None
0/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
High
68/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Amaranthaceae:
None
0/100
Air quality in Grajaú
View air qualityFrequently Asked Questions
Is pollen high in Grajaú right now?
On 16 July 2026, overall pollen levels in Grajaú are high. Cypress is the main contributor to airborne pollen
Will pollen levels change in Grajaú tomorrow?
On 17 July 2026, pollen conditions in Grajaú will be similar to today, with cypress at high levels
Is pollen expected to decrease in Grajaú this week?
According to the five-day outlook, cypress pollen levels will increase later in the week.
Which pollen types are currently active in Grajaú?
On 16 July 2026, Cypress is the dominant pollen source in Grajaú. amaranthaceae and willow are not currently active.
When is pollen season in Grajaú?
How often is the Grajaú pollen forecast updated?
The Grajaú pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Grajaú 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 Grajaú 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 Grajaú, 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.
Want to see pollen forecasts for other cities in Brazil?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Grajaú.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.