The Anchorage year in pollen
Pollen seasons in Anchorage: tree pollen April to June, grass June to August, and no ragweed to speak of.
Tree pollen
Grass
When does ragweed season end in Anchorage?
Anchorage has no real ragweed season.
The rest of the Anchorage pollen year
| Allergen | Typical season |
|---|---|
| Birch | April to June |
| Alder | April to June |
| Cottonwood and aspen | May to June |
| Grass | June to August |
Season-by-season detail is on the Alaska page.
Nearby calendars
Frost dates for Anchorage come from the Anchorage Merrill Field weather station's 30-year records. Season windows reviewed August 2026.