The Newark year in pollen
Pollen seasons in Newark: tree pollen March to June, grass May to July, and ragweed from mid-August until the first frost, around November 10.
Tree pollen
Grass
Ragweed
When does ragweed season end in Newark?
Ragweed season in Newark typically ends with the first frost, around November 10. Some years it comes as early as November 4, some as late as November 16.
A light frost around November 10 knocks the season down; the hard freeze that finishes it usually follows by November 22. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Newark pollen year
| Allergen | Typical season |
|---|---|
| Maple | March to April |
| Birch | April to May |
| Oak | April to June |
| Ash | April to May |
| Pine | May to June |
| Grass | May to July |
Season-by-season detail is on the New Jersey page.
Nearby calendars
Frost dates for Newark come from the Newark International Airport weather station's 30-year records. Season windows reviewed August 2026.