Reston pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Reston 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

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Reston's Fairfax County Virginia planned community setting features oak, tulip poplar, and maple as the main tree pollen sources, with exposure varying between the extensively wooded residential areas surrounding the numerous lakes and the more built-up commercial corridors around Reston Town Center. The Difficult Run corridor and the Potomac River floodplain to the north are particularly significant local sources, while the planned community woodland creates consistently higher tree pollen than in typical suburban settings.

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

Air quality in Reston

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Frequently Asked Questions

Is pollen high in Reston right now?

On 16 July 2026, overall pollen levels in Reston are low. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels

Will pollen levels change in Reston tomorrow?

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

Is pollen expected to decrease in Reston this week?

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

Which pollen types are currently active in Reston?

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

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

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

Does pollen in Reston 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 Reston 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 Reston, 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.

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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 Reston.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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