Hartford pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Hartford is low; grass is low. Tomorrow (26 June 2026) levels are similar - grass remains low, cypress at low levels. Over the following five days cypress and grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Hartford's Connecticut River urban green network, anchored by Bushnell Park and the Connecticut River corridor, features oak, birch, and maple as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Connecticut and Massachusetts woodland and farmland contribute substantial tree and grass pollen, while the river valley channels airflows and concentrates pollen across the city.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    7/100

  • Willow (Salicaceae):

    None

    0/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    10/100

  • Grass (Poaceae):

    Low

    19/100

  • Willow (Salicaceae):

    None

    0/100

Pollen forecast for neighborhoods and landmarks in Hartford

Asylum Hill Behind the Rocks Blue Hills Bushnell Park Colt Gateway Frog Hollow Northeast Hartford Parkville South Green West End Hartford

Frequently Asked Questions

Is pollen high in Hartford right now?

On 25 June 2026, overall pollen levels in Hartford are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Hartford tomorrow?

On 26 June 2026, pollen conditions in Hartford will be different from today, with grass at low levels, cypress at low levels

Is pollen expected to decrease in Hartford this week?

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

Which pollen types are currently active in Hartford?

On 25 June 2026, Grass is the dominant pollen source in Hartford. willow, hazel, and cypress are not currently active.

When is pollen season in Hartford?
Hartford's pollen season opens with maple and birch from late March, slightly later than mid-Atlantic cities due to the cooler New England climate. Oak follows through April and May, with grass peaking through June and July. Ragweed extends the season into September. The Connecticut River valley channels airflows and concentrates pollen, while surrounding Massachusetts and Connecticut woodland and farmland contribute substantial tree and grass pollen.
How often is the Hartford pollen forecast updated?

The Hartford pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Hartford come from nearby or far away?

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.

Are pollen levels in Hartford based on measurements or forecasts?

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 Hartford, 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.

Want to see pollen forecasts for other cities in United States?

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Check pollen in other popular cities:

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Data provided by Airmine — Last update: 25 Jun 2026, 09:01 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Hartford.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.