Westminster pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Westminster is low; grass is low. Tomorrow (26 June 2026) levels are similar - grass increasing, cypress at low levels. Over the following five days cypress and 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
Westminster's parks, including St James's Park and Hyde Park, feature plane and oak as the main tree pollen sources alongside extensive grass from the royal parklands, with exposure varying between these green areas and the densely built streets that dominate much of the borough. The Thames corridor adds local exposure, while the high proportion of hard surfaces limits pollen levels compared to greener parts of London.
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):
Low
23/100
-
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):
Low
16/100
-
Grass (Poaceae):
High
54/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Westminster right now?
On 25 June 2026, overall pollen levels in Westminster are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Westminster tomorrow?
On 26 June 2026, pollen conditions in Westminster will be different from today, with cypress at low levels and grass increasing
Is pollen expected to decrease in Westminster this week?
According to the five-day outlook, grass and cypress pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Westminster?
On 25 June 2026, Grass is the dominant pollen source in Westminster. willow, alder, birch, hazel, and cypress are not currently active.
When is pollen season in Westminster?
How often is the Westminster pollen forecast updated?
The Westminster pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Westminster 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 Westminster 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 Westminster, 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 United Kingdom?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 25 Jun 2026, 09:01 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Westminster.
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.