Rockville pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Rockville is medium; grass is medium; cypress is low. Tomorrow (26 June 2026) levels are similar - cypress remains low, grass declining. Over the following five days cypress will increase; 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

Rockville's Montgomery County Maryland setting features oak, tulip poplar, and maple as the main tree pollen sources, with exposure varying between the wooded Rock Creek Park corridor and the more built-up commercial corridors along Veirs Mill Road. Rock Creek Park is a particularly significant local tree pollen source, creating distinct pollen gradients between the forested stream valley and the adjacent commercial and high-density residential areas throughout the season.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    16/100

  • Grass (Poaceae):

    Medium

    29/100

  • 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

    3/100

  • Grass (Poaceae):

    Low

    14/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Rockville right now?

On 25 June 2026, overall pollen levels in Rockville are moderate. Grass is the main contributor to airborne pollen, while cypress remain at lower levels

Will pollen levels change in Rockville tomorrow?

On 26 June 2026, pollen conditions in Rockville will be different from today, with cypress at low levels and grass continuing to decline

Is pollen expected to decrease in Rockville this week?

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

Which pollen types are currently active in Rockville?

On 25 June 2026, Grass is the dominant pollen source in Rockville. cypress are also present but at lower levels. willow and hazel are not currently active.

When is pollen season in Rockville?
Rockville's Maryland suburban setting produces a season opening in late February with cedar and elm before oak peaks through April. Grass from surrounding Maryland farmland peaks through May and June before mugwort and nettle extend exposure into September. The Rock Creek corridor channels airflows, while the warm mid-Atlantic climate and the urban heat island of the Washington DC metropolitan area advance the season slightly.
How often is the Rockville pollen forecast updated?

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

Does pollen in Rockville 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 Rockville 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 Rockville, 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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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 Rockville.

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.