Oregon pollen and allergy seasons
October outlookLow
Oregon has an early tree season and an intense grass season in the Willamette Valley in late spring and early summer.
Twelve month pollen calendar
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F
M
A
M
J
J
A
S
O
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N
D
LowModerateHighVery high
Dominant species in October
None active
Typical peak in October
No clear peak this month
Worst month of the year
June
Best month of the year
January
What is active in October
Pollen is typically low across the board in October in Oregon.
Cities in Oregon
| City | Today | Worst today | Typical in October |
|---|---|---|---|
| Three Rivers | Moderateas of Oct 16 | Ragweed | Low |
| Sunriver | Moderateas of Oct 16 | Ragweed | Low |
| Eugene | Lowas of Oct 16 | Grass | Low |
| Medford | Lowas of Oct 16 | Grass | Low |
| Lake Oswego | Lowas of Oct 16 | Grass | Low |
| Tualatin | Lowas of Oct 16 | Grass | Low |
| West Linn | Lowas of Oct 16 | Grass | Low |
| Durham | Lowas of Oct 16 | Grass | Low |
| Charleston | Lowas of Oct 16 | Grass | Low |
| Cheshire | Lowas of Oct 16 | Grass | Low |
| Grand Ronde | Lowas of Oct 16 | Grass | Low |
| Cave Junction | Lowas of Oct 16 | Grass | Low |
| Hubbard | Lowas of Oct 16 | Grass | Low |
| Tillamook | Lowas of Oct 16 | Grass | Low |
| Myrtle Creek | Lowas of Oct 16 | Grass | Low |
| South Beach | Lowas of Oct 16 | Grass | Low |
| Portland | No live reading | Not available | Low |
| Salem | No live reading | Not available | Low |
| Bend | No live reading | Not available | Low |
| Gresham | No live reading | Not available | Low |
| Hillsboro | No live reading | Not available | Low |
| Beaverton | No live reading | Not available | Low |
| Corvallis | No live reading | Not available | Low |
| Albany | No live reading | Not available | Low |
| Springfield | No live reading | Not available | Low |
| Tigard | No live reading | Not available | Low |
| Aloha | No live reading | Not available | Low |
| Grants Pass | No live reading | Not available | Low |
| Keizer | No live reading | Not available | Low |
| Oregon City | No live reading | Not available | Low |
| Redmond | No live reading | Not available | Low |
| Mcminnville | No live reading | Not available | Low |
| Bethany | No live reading | Not available | Low |
| Woodburn | No live reading | Not available | Low |
| Forest Grove | No live reading | Not available | Low |
| Wilsonville | No live reading | Not available | Low |
| Newberg | No live reading | Not available | Low |
| Happy Valley | No live reading | Not available | Low |
| Roseburg | No live reading | Not available | Low |
| Hayesville | No live reading | Not available | Low |
| Klamath Falls | No live reading | Not available | Low |
| Ashland | No live reading | Not available | Low |
| Milwaukie | No live reading | Not available | Low |
| Sherwood | No live reading | Not available | Low |
| Altamont | No live reading | Not available | Low |
| Cedar Mill | No live reading | Not available | Low |
| Hermiston | No live reading | Not available | Low |
| Central Point | No live reading | Not available | Low |
| Lebanon | No live reading | Not available | Low |
| Canby | No live reading | Not available | Low |
| Oak Grove | No live reading | Not available | Low |
| Dallas | No live reading | Not available | Low |
| Pendleton | No live reading | Not available | Low |
| Four Corners | No live reading | Not available | Low |
| Troutdale | No live reading | Not available | Low |
| The Dalles | No live reading | Not available | Low |
| Coos Bay | No live reading | Not available | Low |
| St. Helens | No live reading | Not available | Low |
| Cornelius | No live reading | Not available | Low |
| La Grande | No live reading | Not available | Low |
| Sandy | No live reading | Not available | Low |
| Oatfield | No live reading | Not available | Low |
| Gladstone | No live reading | Not available | Low |
| Ontario | No live reading | Not available | Low |
| Oak Hills | No live reading | Not available | Low |
| Prineville | No live reading | Not available | Low |
| Monmouth | No live reading | Not available | Low |
| Gaston | No live reading | Not available | Low |
| Carlton | No live reading | Not available | Low |
| Veneta | No live reading | Not available | Low |
| Lafayette | No live reading | Not available | Low |
| Independence | No live reading | Not available | Low |
| Eagle Point | No live reading | Not available | Low |
| Astoria | No live reading | Not available | Low |
| Boring | No live reading | Not available | Low |
| Seaside | No live reading | Not available | Low |
| Boardman | No live reading | Not available | Low |
| Warrenton | No live reading | Not available | Low |
| Yachats | No live reading | Not available | Low |
| Lakeview | No live reading | Not available | Low |
| Union | No live reading | Not available | Low |
| Turner | No live reading | Not available | Low |
| Gold Beach | No live reading | Not available | Low |
| Cottage Grove | No live reading | Not available | Low |
| Trail | No live reading | Not available | Low |
| Mount Angel | No live reading | Not available | Low |
| Manzanita | No live reading | Not available | Low |
| Mckenzie Bridge | No live reading | Not available | Low |
| Lacomb | No live reading | Not available | Low |
| Ophir | No live reading | Not available | Low |
| Aurora | No live reading | Not available | Low |
| Brownsville | No live reading | Not available | Low |
| Creswell | No live reading | Not available | Low |
| Sublimity | No live reading | Not available | Low |
| Malin | No live reading | Not available | Low |
| Elmira | No live reading | Not available | Low |
| Lincoln City | No live reading | Not available | Low |
| Molalla | No live reading | Not available | Low |
| Westfir | No live reading | Not available | Low |
| Aumsville | No live reading | Not available | Low |
| Idleyld Park | No live reading | Not available | Low |
| Cascade Locks | No live reading | Not available | Low |
| Estacada | No live reading | Not available | Low |
| Oceanside | No live reading | Not available | Low |
| Sheridan | No live reading | Not available | Low |
| Sisters | No live reading | Not available | Low |
| Tangent | No live reading | Not available | Low |
| Mountain View | No live reading | Not available | Low |
| Brookings | No live reading | Not available | Low |
| Selma | No live reading | Not available | Low |
| Bandon | No live reading | Not available | Low |
| Stayton | No live reading | Not available | Low |
| New Hope | No live reading | Not available | Low |
| Eagle Creek | No live reading | Not available | Low |
| Damascus | No live reading | Not available | Low |
| Warren | No live reading | Not available | Low |
| Winston | No live reading | Not available | Low |
| Colton | No live reading | Not available | Low |
| Metzger | No live reading | Not available | Low |
| North Plains | No live reading | Not available | Low |
| Prairie City | No live reading | Not available | Low |
| Philomath | No live reading | Not available | Low |
| Arch Cape | No live reading | Not available | Low |
| Saint Helens | No live reading | Not available | Low |
| Waldport | No live reading | Not available | Low |
| Pacific City | No live reading | Not available | Low |
| Applegate | No live reading | Not available | Low |
| Government Camp | No live reading | Not available | Low |
| Baker City | No live reading | Not available | Low |
| Jacksonville | No live reading | Not available | Low |
| Sutherlin | No live reading | Not available | Low |
| Junction City | No live reading | Not available | Low |
| Adel | No live reading | Not available | Low |
| Mapleton | No live reading | Not available | Low |
| Lyons | No live reading | Not available | Low |
| Scio | No live reading | Not available | Low |
| Vernonia | No live reading | Not available | Low |
| Silverton | No live reading | Not available | Low |
| Jefferson | No live reading | Not available | Low |
| Mitchell | No live reading | Not available | Low |
| Hood River | No live reading | Not available | Low |
| North Bend | No live reading | Not available | Low |
| Marcola | No live reading | Not available | Low |
| Cannon Beach | No live reading | Not available | Low |
| Buxton | No live reading | Not available | Low |
| Mulino | No live reading | Not available | Low |
| Johnson City | No live reading | Not available | Low |
| Monroe | No live reading | Not available | Low |
| Fairview | No live reading | Not available | Low |
| Rockaway Beach | No live reading | Not available | Low |
| Newport | No live reading | Not available | Low |
| Scappoose | No live reading | Not available | Low |
| Toledo | No live reading | Not available | Low |
| White City | No live reading | Not available | Low |
| Florence | No live reading | Not available | Low |
| Clackamas | No live reading | Not available | Low |
| Elsie | No live reading | Not available | Low |
| Madras | No live reading | Not available | Low |
| La Pine | No live reading | Not available | Low |
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
Pollen is only half of what's in the air. See today's air quality in Oregon for ozone, dust, and smoke readings by city.
The Oregon allergy season
Allergy levels in Oregon peak in June, when grass pollen runs highest. The season moves through tree pollen around March, grass in June, weed pollen such as ragweed in August. Levels start to climb around February. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Oregon?
Pollen levels in Oregon usually begin climbing in February and reach their highest point in June.
What is the worst month for allergies in Oregon?
June is typically the worst month in Oregon, driven by grass pollen.
When does ragweed season end in Oregon?
Ragweed pollen in Oregon usually fades by the end of September, after the first hard frost in colder areas.
When is the best time for allergies in Oregon?
January usually brings the lowest pollen levels of the year in Oregon.