Caldas da Rainha pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Caldas da Rainha is high; grass is high. Tomorrow (26 June 2026) levels are similar. Over the following five days grass will decrease. 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
Caldas da Rainha's Óbidos lagoon waterfront and the Real River corridor feature pine, oak, and eucalyptus as the main tree pollen sources in this Portuguese spa town. Surrounding farmland and the coastal lagoon vegetation contribute substantial tree and grass pollen, while the Atlantic-facing position means onshore westerly winds and frequent rainfall provide regular interruptions throughout.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
High
52/100
-
Willow (Salicaceae):
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 - 26 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
High
61/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Caldas da Rainha right now?
On 25 June 2026, overall pollen levels in Caldas da Rainha are high. Grass is the main contributor to airborne pollen
Will pollen levels change in Caldas da Rainha tomorrow?
On 26 June 2026, pollen conditions in Caldas da Rainha will be similar to today, with grass at high levels
Is pollen expected to decrease in Caldas da Rainha this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Caldas da Rainha?
On 25 June 2026, Grass is the dominant pollen source in Caldas da Rainha. birch, hazel, cypress, willow, and alder 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: 25 Jun 2026, 09:02 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Caldas da Rainha.
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
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.