Caxias pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Caxias is low; cypress and willow are low. Tomorrow (10 August 2026) levels are similar. Over the following five days cypress and willow will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Caxias lies in the Maranhão cerrado-caatinga transitional zone near the Piauí border, where native caatinga scrub, cerrado trees, and babaçu palm are the main pollen sources. The semi-arid climate produces a compressed wet season, while the dry season concentrates pollen production and the transitional zone contributes a distinctive mixed pollen environment throughout this Maranhão interior city.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
2/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
Low
14/100
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
3/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
Low
15/100
Air quality in Caxias
View air qualityFrequently Asked Questions
Is pollen high in Caxias right now?
On 9 August 2026, overall pollen levels in Caxias are low. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Caxias tomorrow?
On 10 August 2026, pollen conditions in Caxias will be similar to today, with cypress at low levels, willow at low levels
Is pollen expected to decrease in Caxias this week?
According to the five-day outlook, cypress and willow pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Caxias?
On 9 August 2026, Cypress is the dominant pollen source in Caxias. willow are also present but at lower levels.
When is pollen season in Caxias?
How often is the Caxias pollen forecast updated?
The Caxias pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Caxias 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 Caxias 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 Caxias, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Caxias.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.