Northbrook pollen forecast — Willowhill Golf Course neighborhood

On 30 August 2026, overall pollen levels in Northbrook are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels

On 31 August 2026, pollen conditions in Northbrook will be similar to today, with ambrosia at high levels, artemisia at moderate levels, grass at moderate levels

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

On 30 August 2026, Ambrosia is the dominant pollen source in Northbrook. artemisia and grass are also present but at lower levels. cypress are not currently active.

Along the waterway, hazel and willow release pollen first, reaching its high point sometime in late winter or early spring. Oak and birch in the woodland come next, through the heart of spring, generally peaking somewhere between April and May. As spring turns to summer, grass pollen rises toward its June high, before ragweed takes over as the dominant allergen from mid-August through October.

The Northbrook 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 Northbrook, 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.