Bolton pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Bolton is high; grass is high; cypress is low. Tomorrow (26 June 2026) levels are similar - cypress remains low, grass declining. Over the following five days cypress and grass 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
Bolton's parks, including Queens Park, feature silver birch and grass as key pollen sources, with exposure varying between these green areas and the more built-up town centre. To the east, the open grassland and heather of the West Pennine Moors contribute additional pollen that can be carried into the town when winds blow from the east.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
24/100
-
Grass (Poaceae):
High
60/100
-
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
8/100
-
Grass (Poaceae):
Medium
44/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Bolton right now?
On 25 June 2026, overall pollen levels in Bolton are high. Grass is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Bolton tomorrow?
On 26 June 2026, pollen conditions in Bolton will be different from today, with cypress at low levels and grass continuing to decline
Is pollen expected to decrease in Bolton this week?
According to the five-day outlook, cypress and grass pollen levels will increase later in the week.
Which pollen types are currently active in Bolton?
On 25 June 2026, Grass is the dominant pollen source in Bolton. cypress are also present but at lower levels. alder, birch, hazel, and willow are not currently active.
When is pollen season in Bolton?
How often is the Bolton pollen forecast updated?
The Bolton pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Bolton 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 Bolton 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 Bolton, 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 Bolton.
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.