Arlington pollen forecast — Rosslyn neighborhood

Today (16 July) pollen in Rosslyn, Arlington is low; grass and ragweed are low. Tomorrow (17 July 2026) levels are similar. Over the following five days grass and ragweed will increase. 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

Use our Strava plugin to check your own exposure.

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Rosslyn is a high-rise business district at the Potomac's edge across from Georgetown. Vegetation here reflects the wider Arlington area, with tree and grass pollen exposure following the same regional pattern as the rest of the city. Any difference from the citywide pattern here tends to be minor rather than a distinct microclimate.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    12/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    3/100

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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    None

    0/100

Other Landmarks in Arlington

Arlington National Cemetery Ballston Clarendon Crystal City Rosslyn The Pentagon US Marine Corps War Memorial

Frequently Asked Questions

Is pollen high in Arlington right now?

On 16 July 2026, overall pollen levels in Arlington are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Arlington tomorrow?

On 17 July 2026, pollen conditions in Arlington will be similar to today with no significant pollen expected.

Is pollen expected to decrease in Arlington this week?

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

Which pollen types are currently active in Arlington?

On 16 July 2026, Ambrosia is the dominant pollen source in Arlington. grass are also present but at lower levels. willow, alder, artemisia, birch, cypress, and oak are not currently active.

When is pollen season in Arlington?
At Rosslyn, a neighborhood in Arlington, the pollen season opens with cedar and elm from late February with oak joining in and continuing through April. Grass pollen builds through May and June, and ragweed and mugwort extend the weed season into September. Relatively mild winters here bring the tree pollen season forward compared to points further north, consistent with the wider Arlington area.
How often is the Arlington pollen forecast updated?

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

Does pollen in Arlington 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 Arlington 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 Arlington, 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:

Rio de Janeiro Copenhagen Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Rosslyn, Arlington.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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