London pollen forecast — St Paul's Cathedral neighborhood

Currently, there is no significant pollen in London.

On 26 June 2026, pollen conditions in London will be different from today, with cypress at low levels, grass at medium levels

According to the five-day outlook, cypress and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

On 25 June 2026, there are no significant pollen types in London.

St Paul's Cathedral sits in a densely built part of the City of London with limited surrounding vegetation, meaning local pollen sources are minimal. Plane trees lining nearby streets and the Thames embankment are the main contributors from April, with grass pollen playing a minor role given the limited green space. Pollen exposure at this location is largely determined by what is carried in from greener parts of the city.

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

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.

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.