Chester pollen forecast - today, tomorrow and the week ahead

On 9 August 2026, overall pollen levels in Chester are high. Artemisia is the main contributor to airborne pollen

On 10 August 2026, pollen conditions in Chester will be different from today, with artemisia continuing to decline

According to the five-day outlook, artemisia, cypress, and grass pollen levels will increase later in the week.

On 9 August 2026, Artemisia is the dominant pollen source in Chester. hazel, cypress, grass, and willow are not currently active.

Locals in Chester usually notice birch first, with sycamore not far behind it. On top of that, grass pollen runs May to September and tends to hit hardest in June and July. Birch pollen typically runs from March to May, while sycamore follows on from April to June. Good to know if you're planning anything outdoors that time of year.

The Chester 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 Chester, 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.