Bar Harbor pollen forecast — Acadia Carriage Roads neighborhood

Currently, there is no significant pollen in Bar Harbor.

On 17 July 2026, pollen conditions in Bar Harbor will be different from today, with grass at low levels, ambrosia at low levels

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

On 16 July 2026, there are no significant pollen types in Bar Harbor.

Acadia Carriage Roads tracks Bar Harbor's broader pollen pattern, with maple and elm appearing from March before birch and oak extends the tree season through April and May. Grass pollen then peaks through June and July, and ragweed and mugwort keep weed pollen elevated into September. Cold winters give way to a fast, concentrated spring pollen ramp-up across the region, consistent with the wider Bar Harbor area.

The Bar Harbor 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 Bar Harbor, 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.