Corvallis pollen forecast — Downtown Corvallis neighborhood

Currently, there is no significant pollen in Corvallis.

On 17 July 2026, pollen conditions in Corvallis will be different from today, with grass at low levels, oak at low levels, ambrosia at low levels

According to the five-day outlook, grass, oak, and ambrosia pollen levels will increase later in the week.

On 16 July 2026, there are no significant pollen types in Corvallis.

As a neighborhood within Corvallis, Downtown Corvallis follows the same seasonal pollen curve, opening with alder and birch from February with maple joining in and continuing through March and April. Grass pollen builds through May and June, and mugwort and nettle extend exposure into September. The mild, wet Pacific Northwest climate and frequent spring rain periodically wash pollen from the air, a pattern felt across this part of Corvallis.

The Corvallis pollen forecast is updated four times daily. See the timestamp below for the most recent update.

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.

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.