Caldas da Rainha pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Caldas da Rainha is low; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar. Over the following five days grass and mugwort will increase. 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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Caldas da Rainha's Óbidos lagoon waterfront and the Real River corridor pine and eucalyptus lead the tree pollen count, with grass adding through spring from local Leiria farmland. Onshore westerly winds and regular rain both help disperse pollen here.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
4/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
10/100
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):
None
0/100
-
Grass (Poaceae):
Low
4/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
13/100
Air quality in Caldas da Rainha
View air qualityFrequently Asked Questions
Is pollen high in Caldas da Rainha right now?
On 9 August 2026, overall pollen levels in Caldas da Rainha are low. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Caldas da Rainha tomorrow?
On 10 August 2026, pollen conditions in Caldas da Rainha will be similar to today, with artemisia at low levels, grass at low levels
Is pollen expected to decrease in Caldas da Rainha this week?
According to the five-day outlook, artemisia and grass pollen levels will increase later in the week.
Which pollen types are currently active in Caldas da Rainha?
On 9 August 2026, Artemisia is the dominant pollen source in Caldas da Rainha. grass are also present but at lower levels. willow, hazel, and cypress are not currently active.
When is pollen season in Caldas da Rainha?
How often is the Caldas da Rainha pollen forecast updated?
The Caldas da Rainha pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Caldas da Rainha 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 Caldas da Rainha 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 Caldas da Rainha, 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 Portugal?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Caldas da Rainha.
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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.