Corvallis pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Corvallis is medium; grass is medium; oak and ragweed are low. Tomorrow (17 July 2026) levels are similar - grass declining. Over the following five days grass, oak, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Corvallis's Willamette Valley setting features Oregon white oak, bigleaf maple, and alder as the main tree pollen sources alongside the exceptionally significant ryegrass and fescue grass seed crops of the surrounding farmland. Exposure varies between the wooded Mary's Peak foothills to the west and the more built-up university commercial areas, while the Willamette River corridor provides significant local green space. The surrounding grass seed industry makes summer grass pollen exceptional here.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
33/100
-
Oak (Quercus):
Low
11/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
Low
16/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
3/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
None
0/100
Air quality in Corvallis
View air qualityPollen forecast for neighborhoods and landmarks in Corvallis
Frequently Asked Questions
Is pollen high in Corvallis right now?
On 16 July 2026, overall pollen levels in Corvallis are moderate. Grass is the main contributor to airborne pollen, while oak and ambrosia remain at lower levels
Will pollen levels change in Corvallis tomorrow?
On 17 July 2026, pollen conditions in Corvallis will be different from today, with grass continuing to decline
Is pollen expected to decrease in Corvallis this week?
According to the five-day outlook, grass, oak, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Corvallis?
On 16 July 2026, Grass is the dominant pollen source in Corvallis. oak and ambrosia are also present but at lower levels. birch, cypress, willow, alder, and artemisia are not currently active.
When is pollen season in Corvallis?
How often is the Corvallis pollen forecast updated?
The Corvallis pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Corvallis come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Corvallis based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Corvallis, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Want to see pollen forecasts for other cities in United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Corvallis.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.