London pollen forecast — Tower of London neighborhood

Today (21 July) pollen in Tower of London, London is low; grass and mugwort are low. Tomorrow (22 July 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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In Tower of London, sycamore and oak dominate the local tree pollen picture, with parks and tree-lined residential streets offering more exposure than the compact centre. The wider London, City of countryside supplies additional tree and grass pollen, particularly when southwesterly winds carry it toward the built-up area. Locals with allergies tend to plan around two peaks a year rather than one long stretch.

Today - 21 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    12/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    19/100

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 - 22 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    6/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    15/100

Other Landmarks in London

Battersea Park Brixton Buckingham Palace Camden Town Canary Wharf Clapham Common Crystal Palace Park Dalston & Stoke Newington Ealing & Gunnersbury Park Elephant & Castle Epping Forest Greenwich Park Hackney & Victoria Park Hampstead Heath Hyde Park Kew Gardens Muswell Hill Notting Hill Olympic Park & Stratford RHS Wisley Gardens Richmond Park Shoreditch & Hoxton Soho Southwark & Borough Market St Paul's Cathedral The Shard Tower of London Trafalgar Square Westminster Wimbledon Common Windsor Great Park

Frequently Asked Questions

Is pollen high in London right now?

On 21 July 2026, overall pollen levels in London are low. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in London tomorrow?

On 22 July 2026, pollen conditions in London will be similar to today, with artemisia at low levels, grass at low levels

Is pollen expected to decrease in London 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 London?

On 21 July 2026, Artemisia is the dominant pollen source in London. grass are also present but at lower levels. willow, alder, birch, hazel, and cypress are not currently active.

When is pollen season in London?
For Tower of London, the season kicks off with sycamore and then hands things over to oak. Then grass pollen takes the baton from May all the way to September, usually peaking in June and July — that's when most people really feel it. Sycamore tends to release pollen between April and June, with oak picking up between April and May. Worth factoring in if hay fever's ever been an issue for you here.
How often is the London pollen forecast updated?

The London pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in London 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 London 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 London, 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?

Birmingham Bristol Glasgow Leeds Liverpool Manchester Portsmouth Sheffield Southampton

Check pollen in other popular cities:

Rio de Janeiro Copenhagen Athens Denpasar Rome Cape Town Barcelona Los Angeles New York

Data provided by Airmine — Last update: 21 July 2026 at 10:44 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Tower of London, London.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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