Bend Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (17 October) pollen in Bend is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (18 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and ragweed will increase; mold (alternaria) and mold (cladosporium) will decrease; grass will remain stable.
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Pollen Risk
Today - 17 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | None | 0/100 |
| Mold (Alternaria) | Low | 6/100 |
| Mold (Cladosporium) | Low | 16/100 |
Tomorrow - 18 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 | |
| Mold (Alternaria) | Low | 3/100 | |
| Mold (Cladosporium) | Low | 10/100 |
Local Environmental Conditions
Juniper is Bend's signature allergen, as western juniper covers the high desert east of the city and releases large amounts of pollen each spring. Ponderosa pine forests to the west add yellow pine pollen, which is plentiful but a weak allergen. Cottonwood, aspen, willow, birch and maple grow along the Deschutes River and in the city's parks and neighborhoods. Lawns and irrigated fields supply grass pollen, while sagebrush, rabbitbrush and Russian thistle grow on the dry rangeland around Bend. Strong spring winds spread juniper pollen widely.
Bend's high-desert pollen season starts with western juniper, which can flower from February to April, even as winters average around 0°C in January. Willow, cottonwood, aspen and birch follow in April and May, and pine pollen coats cars and decks yellow in late May and June. Grass pollen peaks from June to early July, when the dry summer averages around 19°C. Sagebrush and other weeds add pollen in August and September, until the first hard frosts end the season in Bend.
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Resource Hub
Pollen forecast neighborhoods 1 neighborhood
Sports venues in Bend 1 sports venue
Popular Local Routes 1 route
Frequently Asked Questions About Pollen in Oregon
Is pollen high in Bend right now?
Currently, there is no significant pollen in Bend.
Will pollen levels change in Bend tomorrow?
On 18 October 2026, pollen conditions in Bend will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Bend this week?
According to the five-day outlook, mugwort and ragweed pollen levels will increase later in the week.
Which pollen types are currently active in Bend?
On 17 October 2026, there are no significant pollen types in Bend.
When is pollen season in Bend?
How often is the Bend pollen forecast updated?
The Bend pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Bend 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 Bend 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 Bend, 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.
Understanding the Scale
The 0–100 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
