Washington pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Washington is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar. Over the following five days grass, mugwort, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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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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Washington DC's richly planted urban landscape, including the National Mall and Rock Creek Park, features oak, cherry, and maple as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. The Potomac and Anacostia river corridors add grass and reed pollen locally, while surrounding Maryland and Virginia farmland and woodland contribute additional pollen under prevailing southwesterly winds.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
5/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
9/100
-
Ragweed (Ambrosia):
Medium
36/100
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
6/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
11/100
-
Ragweed (Ambrosia):
Medium
39/100
Air quality in Washington
View air qualityPollen forecast for neighborhoods and landmarks in Washington
Sports venues in Washington
Frequently Asked Questions
Is pollen high in Washington right now?
On 9 August 2026, overall pollen levels in Washington are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Washington tomorrow?
On 10 August 2026, pollen conditions in Washington will be similar to today, with grass at low levels, ambrosia at medium levels, artemisia at low levels
Is pollen expected to decrease in Washington this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Washington?
On 9 August 2026, Ambrosia is the dominant pollen source in Washington. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in Washington?
How often is the Washington pollen forecast updated?
The Washington pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Washington 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 Washington 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 Washington, 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?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Washington.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.