Harwich pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Harwich are low. Grass is the main contributor to airborne pollen

On 17 July 2026, pollen conditions in Harwich will be similar to today, with grass at low levels

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

On 16 July 2026, Grass is the dominant pollen source in Harwich. alder, artemisia, birch, hazel, cypress, and willow are not currently active.

Pollen season in Harwich really gets going with birch, followed not long after by lime. Grass then takes over from May right through September, peaking around June and July for most people. Birch pollen typically runs from March to May, before lime takes over, usually May to July. Handy to bear in mind before booking that garden party.

The Harwich 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 Harwich, 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.