Delaware pollen and allergy seasons
Delaware has an early spring tree season and a strong ragweed season in the fall.
Twelve month pollen calendar
What is active in July
Cities in Delaware
| City | Today | Worst today | Typical in July |
|---|---|---|---|
| Brookside | Very Highas of Jul 12 | Grass | Moderate |
| Millsboro | Moderateas of Jul 12 | Grass | Moderate |
| Claymont | Lowas of Jul 12 | Grass | Moderate |
| Seaford | Lowas of Jul 12 | Grass | Moderate |
| Dover | No live reading | Not available | Moderate |
| Wilmington | No live reading | Not available | Moderate |
| Newark | No live reading | Not available | Moderate |
| Middletown | No live reading | Not available | Moderate |
| Bear | No live reading | Not available | Moderate |
| Glasgow | No live reading | Not available | Moderate |
| Hockessin | No live reading | Not available | Moderate |
| Smyrna | No live reading | Not available | Moderate |
| Milford | No live reading | Not available | Moderate |
| Pike Creek Valley | No live reading | Not available | Moderate |
| Greenwood | No live reading | Not available | Moderate |
| Bethany Beach | No live reading | Not available | Moderate |
| Bridgeville | No live reading | Not available | Moderate |
| Milton | No live reading | Not available | Moderate |
| Frankford | No live reading | Not available | Moderate |
| Lincoln | No live reading | Not available | Moderate |
| Townsend | No live reading | Not available | Moderate |
| Harbeson | No live reading | Not available | Moderate |
| Pike Creek | No live reading | Not available | Moderate |
| Woodside | No live reading | Not available | Moderate |
| Elsmere | No live reading | Not available | Moderate |
| Houston | No live reading | Not available | Moderate |
| Georgetown | No live reading | Not available | Moderate |
| New Castle | No live reading | Not available | Moderate |
| Lewes | No live reading | Not available | Moderate |
| Ocean View | No live reading | Not available | Moderate |
| Millville | No live reading | Not available | Moderate |
| Dagsboro | No live reading | Not available | Moderate |
| Rehoboth Beach | No live reading | Not available | Moderate |
| Ellendale | No live reading | Not available | Moderate |
| Clayton | No live reading | Not available | Moderate |
| Selbyville | No live reading | Not available | Moderate |
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
The Delaware allergy season
Allergy levels in Delaware peak in September, when ragweed pollen runs highest. The season moves through tree pollen around April, grass in May, weed pollen such as ragweed in September. Levels start to climb around March. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Delaware?
Pollen levels in Delaware usually begin climbing in March and reach their highest point in September.
What is the worst month for allergies in Delaware?
September is typically the worst month in Delaware, driven by ragweed pollen.
When does ragweed season end in Delaware?
Ragweed pollen in Delaware usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Delaware?
January usually brings the lowest pollen levels of the year in Delaware.