Bolton pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Bolton is low; cypress, grass, and mugwort are low. Tomorrow (17 July 2026) levels are similar. Over the following five days cypress and mugwort will increase; 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
Use our Strava plugin to check your own exposure.
Bolton sees oak and ash as the leading tree pollen contributors, with levels differing noticeably between well-vegetated suburbs and the denser core. Local farmland and hedgerows nearby add meaningful grass pollen through late spring and summer, especially under light prevailing breezes. Hay fever sufferers here typically notice symptoms peaking in late spring, then again during the summer grass season.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
4/100
-
Grass (Poaceae):
Low
23/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
1/100
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 - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
5/100
-
Grass (Poaceae):
Low
23/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
3/100
Air quality in Bolton
View air qualityFrequently Asked Questions
Is pollen high in Bolton right now?
On 16 July 2026, overall pollen levels in Bolton are low. Grass is the main contributor to airborne pollen, while artemisia and cypress remain at lower levels
Will pollen levels change in Bolton tomorrow?
On 17 July 2026, pollen conditions in Bolton will be similar to today, with grass at low levels, artemisia at low levels, cypress at low levels
Is pollen expected to decrease in Bolton this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, while artemisia and cypress pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Bolton?
On 16 July 2026, Grass is the dominant pollen source in Bolton. artemisia and cypress are also present but at lower levels. willow, alder, birch, and hazel 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: 16 July 2026 at 10:33 CEST (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
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.