Boston pollen forecast — Charles River Esplanade neighborhood

Currently, there is no significant pollen in Boston.

On 26 June 2026, pollen conditions in Boston will be similar to today with no significant pollen expected.

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

On 25 June 2026, there are no significant pollen types in Boston.

Boston Charles River Esplanade runs along the Boston side of the Charles River, where willow, cottonwood, and introduced ornamental trees are the main pollen sources along this classic riverside park. The river corridor concentrates pollen under calm conditions, while birch peaks through April and May, grass peaks through June and July, and mugwort extends into September throughout this beloved Boston riverside recreational park.

The Boston 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 Boston, 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.