Check today's pollen count by city in District of Columbia. Explore local allergy forecasts, monitor common seasonal allergens, and use city-level trends to plan around high pollen days.
Allergy Ava organizes statewide and local pollen information so you can compare conditions, anticipate seasonal flare-ups, and find relevant allergy forecast pages faster.
Today's pollen count in District of Columbia
Pollen levels in District of Columbia can vary by city, weather, vegetation, and season. Choose a local forecast below to see the current allergy index, main allergen, and 5-day outlook for cities including Washington, D.C..
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Preparing today's District of Columbia pollen dashboard
About Pollen in District of Columbia
District of Columbia allergy sufferers can use this page to monitor pollen trends and find relevant city forecasts when available. Pollen levels vary by season, with tree pollen often peaking in spring, grass pollen becoming more active in late spring and summer, and weed pollen, especially ragweed, remaining a concern in late summer and fall.
Use Allergy Ava's city-level forecasts to plan outdoor activities, manage medication timing, and stay informed about the allergens most prevalent in your area. Our data is updated regularly to give you the most accurate picture of current conditions.
Frequently asked questions about District of Columbia pollen forecasts
Are DC cherry blossoms the main spring allergy problem?
Usually, no. Cherry blossoms are highly visible, but many ornamental flowering trees rely more on insects than wind. DC spring symptoms are more often driven by wind-pollinated trees such as oak, maple, elm, sycamore, birch, cedar, ash, and mulberry.
Why can pollen feel different across Washington, DC neighborhoods?
Tree canopy, park proximity, river corridors, traffic exposure, mowing, construction, and urban heat vary block by block. A Rock Creek, Capitol Hill, Brookland, Anacostia, or Foggy Bottom day can feel different even under the same citywide forecast.
Does the Potomac or Anacostia reduce pollen in DC?
Sometimes water-adjacent breezes can redirect or dilute pollen, but they are not a guarantee. River humidity can also make mold-sensitive symptoms more noticeable, especially after rain or leaf drop.
When should DC residents watch for ragweed?
Ragweed usually becomes important in August and can last into October or until colder weather becomes consistent. Wind can carry ragweed pollen from disturbed soil, road edges, vacant lots, and regional open areas into dense neighborhoods.
Today's statewide signal
Washington, DC pollen forecast: urban tree canopy, park corridors, grass, and ragweed
Washington, DC allergy conditions are shaped by a dense urban tree canopy, Rock Creek Park, the Potomac and Anacostia corridors, neighborhood lawns, traffic corridors, heat-island effects, humidity, and late-season ragweed. Use the Washington, DC page to check local pollen levels, the leading allergen, weather context, and short-term trend signals before commuting, running, sightseeing, or spending time outdoors.
Data updates regularly to reflect current conditions across District of Columbia cities.
Highest city index now
Washington, D.C.
Cedar · High
4
Average pollen index
4
Average humidity
64%
Average wind
7 mph
Live city comparison
Today's pollen and weather by city
Sort District of Columbia cities by pollen index, temperature, or trend. Select a city for its full local forecast.
Even with one city page, DC pollen exposure can vary by neighborhood. Tree-lined streets, Rock Creek Park, the National Mall, river corridors, school fields, rowhouse blocks, and urban heat can all change the day’s main trigger.
OakMapleGrassRagweed
Index
4
Humidity
64%
Wind
7
State-specific pollen calendar
When major allergens are active in District of Columbia
Urban tree pollen
March to May
MarAprMay
Oak, maple, elm, sycamore, birch, cedar or juniper, mulberry, ash, and other wind-pollinated trees can drive the strongest spring symptoms across DC’s streets, parks, and river corridors.
Grass pollen
May to July
MayJunJul
Timothy, rye, fescue, bluegrass, Bermuda grass, lawns, school fields, parks, rights-of-way, and open green space can raise late-spring and summer pollen exposure.
Ragweed and urban weeds
August to October
AugSepOct
Ragweed is the main fall pollen trigger, with plantain, dock, pigweed, and other weeds adding pressure around rail corridors, vacant lots, road edges, construction sites, and disturbed soil.
Lower pollen and mold-prone months
November to February
NovDecJanFeb
Outdoor pollen usually drops after colder weather, but damp leaves, basement mold, indoor dust, pets, and mild winter warmups can still irritate symptoms before the next tree season starts.
Weather-pollen correlation
What weather means for today's allergy risk
Wind can disperse pollen, rain can temporarily wash particles down, and humidity can increase mold irritation. The city table combines pollen and weather signals so users can compare outdoor risk without opening every city page.