The Amarillo year in pollen
Pollen seasons in Amarillo: tree pollen February to May, grass May to August, and ragweed from early August until the first frost, around October 27.
Amarillo's pollen year runs on a different clock than most of Texas — the seasons below follow Amarillo's own climate, not the statewide picture.
When does ragweed season end in Amarillo?
Ragweed season in Amarillo typically ends with the first frost, around October 27. Some years it comes as early as October 22, some as late as November 1.
A light frost around October 27 knocks the season down; the hard freeze that finishes it usually follows by November 5. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Amarillo pollen year
| Allergen | Typical season |
|---|---|
| Eastern red cedar | February to April |
| Elm | February to April |
| Maple | March to April |
| Oak | April to May |
| Cottonwood | April to May |
| Grass | May to August |
Season-by-season detail is on the Texas page.
Nearby calendars
Frost dates for Amarillo come from the Amarillo weather station's 30-year records. Season windows reviewed August 2026.