Hamilton pollen forecast — Main Street Historic District neighborhood

On 9 August 2026, overall pollen levels in Hamilton are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels

On 10 August 2026, pollen conditions in Hamilton will be different from today, with grass at low levels, ambrosia at medium levels and artemisia increasing

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

On 9 August 2026, Ambrosia is the dominant pollen source in Hamilton. artemisia and grass are also present but at lower levels. cypress are not currently active.

Hazel and willow by the water are typically first out of the gate, climbing steadily from late winter into March. The nearby oak and birch stands take the lead as spring progresses, building to its sharpest point across April and May. Grass pollen becomes the dominant allergen through late spring, peaking in June, with ragweed then rising to the fore from mid-August through October.

The Hamilton 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 Hamilton, 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.