
Dr. Alana Jones
Nemours Children's Hospital
Check today's pollen count by city in Delaware. 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.
Pollen levels in Delaware 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 Wilmington, Dover, Newark, Rehoboth Beach, Lewes, Middletown.
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Local allergy care
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.

Nemours Children's Hospital

Beebe Allergy

Bayhealth ENT

Peninsula Allergy & Asthma Associates

David Wien

Nemours Children's Hospital
Showing 6 of 30 published allergist profiles in this area.
Delaware 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.
Sometimes. An onshore ocean breeze can dilute airborne pollen, but winds from inland may carry it toward the coast. Dune grasses, nearby vegetation, and coastal humidity can also keep symptoms active.
Usually not. Goldenrod has heavy pollen that is mainly carried by insects. Ragweed blooms at roughly the same time but releases lightweight pollen into the wind, making it the more likely fall trigger.
Wilmington has a denser urban and hardwood-tree canopy, while Rehoboth Beach is influenced by coastal wind, grasses, and humidity. Wind direction and recent rainfall can widen the difference on any given day.
Steady rain can wash pollen from the air temporarily. However, lingering humidity and wet vegetation may increase mold exposure, and pollen can rebound after surfaces dry.
Today's statewide signal
Delaware’s pollen conditions can change quickly between northern city neighborhoods, central farmland, and the Atlantic coast. Compare today’s dominant allergen, pollen index, wind, humidity, and rain outlook across six Delaware communities.
Data updates regularly to reflect current conditions across Delaware cities.
Highest city index now
Middletown
Mugwort · Very High
5
Live city comparison
Sort Delaware cities by pollen index, temperature, or trend. Select a city for its full local forecast.
| Main allergen | Weather context | ||||
|---|---|---|---|---|---|
| Middletown | 5Very High | Mugwort | Stable Tomorrow looks similar, near very high conditions. | 77°F | Chance of showers 12 mph wind can disperse mugwort pollen quickly today. |
| Wilmington | 1Very Low | Elm | Stable Tomorrow looks similar, near very low conditions. | 77°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
| Dover | 0None | None | Rising Forecast moves toward very low conditions tomorrow. | 77°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
| Newark | 0None | None | Stable Tomorrow looks similar, near none conditions. | 77°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
| Rehoboth Beach | 0None | None | Stable Tomorrow looks similar, near none conditions. | 77°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
| Lewes | 0None | None | Stable Tomorrow looks similar, near none conditions. | 77°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
Mugwort is the main allergen
Pollen index
5
Trend
Stable
12 mph wind can disperse mugwort pollen quickly today.
Elm is the main allergen
Pollen index
1
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Rising
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
Regional allergy forecast
Mature street trees, wooded parks, university landscaping, and urban heat contribute to an intense spring tree season around Wilmington and Newark.
Suburban growth, farmland, lawns, and open roadside vegetation create a mix of tree pollen, summer grasses, and late-season ragweed.
Onshore wind may reduce pollen on some days, but coastal grasses, inland airflow, summer humidity, and damp vegetation can keep allergy symptoms active.
State-specific pollen calendar
March to May
Maple, cedar/juniper, oak, birch, and hickory contribute to Delaware’s main spring pollen wave.
May to July
Grass pollen rises around lawns, fields, roadsides, parks, and coastal communities during warm and breezy weather.
August to October
Ragweed is the major fall allergy concern. Giant ragweed may begin blooming in July and continue into October.
May to October
Warm humidity, storms, wetlands, and damp vegetation can increase mold pressure, particularly in central and coastal Delaware.
Weather-pollen correlation
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.