The Bridgeport year in pollen
Pollen seasons in Bridgeport: tree pollen March to June, grass May to July, and ragweed from mid-August until the first frost, around November 6.
First frost lands around November 6 in Bridgeport — about 10 days later than Connecticut overall — which shifts when ragweed season ends here.
When does ragweed season end in Bridgeport?
Ragweed season in Bridgeport typically ends with the first frost, around November 6. Some years it comes as early as November 1, some as late as November 12.
A light frost around November 6 knocks the season down; the hard freeze that finishes it usually follows by November 19. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Bridgeport 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 Connecticut page.
Nearby calendars
Frost dates for Bridgeport come from the Bridgeport Sikorsky Mem Airport weather station's 30-year records. Season windows reviewed August 2026.