Hudiksvall pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Hudiksvall are high. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

On 17 July 2026, pollen conditions in Hudiksvall will be similar to today, with cypress at high levels, grass at medium levels

According to the five-day outlook, grass pollen levels are expected to gradually decrease, while cypress and artemisia pollen will increase, suggesting mixed conditions later in the week.

On 16 July 2026, Cypress is the dominant pollen source in Hudiksvall. grass are also present but at lower levels. hazel, willow, alder, artemisia, and birch are not currently active.

Hudiksvall's pollen season is compressed, running from March through September, with alder and birch arriving later than in southern Sweden but peaking more intensely over a shorter window. From June onward, grass overtakes birch as the main pollen source for several weeks. Air moving across the Bothnian Sea archipelago periodically clears or concentrates pollen depending on which way the wind is blowing. Forestry and light industry activity in the area has little direct bearing on pollen levels, which instead track the regional spruce and farmland cover.

The Hudiksvall 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 Hudiksvall, 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.