Name: Pollen forecast for Portland (2026-10-22)
Creator: Pollen Count
Published: 2026-10-22T15:56:45Z
License: https://pollencount.org/terms/

The pollen count in Portland today is moderate, driven mainly by Grass (mixed).

MED

13 active species

Refreshing live forecast…

.forecast-refresh-status{display:none!important}.date-tab{cursor:default;opacity:.55}Showing today's cached forecast. Enable JavaScript to switch days and load live data.

4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌾 Grass (mixed)	MED	12 grains/m³
🌾 Perennial Ryegrass	MED	11 grains/m³
🌾 Cock's-foot	MED	10 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
🌿 Mugwort	MED	9 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌾 Grass (mixed)	MED	6 grains/m³
🌿 Mugwort	MED	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌿 Mugwort	HIGH	18 grains/m³
🌾 Grass (mixed)	MED	17 grains/m³
🌾 Perennial Ryegrass	MED	15 grains/m³
🌾 Cock's-foot	MED	14 grains/m³
🌾 Timothy Grass	MED	14 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌾 Grass (mixed)	HIGH	20 grains/m³
🌾 Perennial Ryegrass	MED	18 grains/m³
🌾 Cock's-foot	MED	17 grains/m³
🌾 Timothy Grass	MED	17 grains/m³
🌿 Mugwort	HIGH	16 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS

Last updated: 15:56 UTC

4-Day Forecast	Tree	Grass	Weed
Thu 22 Oct	LOW	MED	MED
Fri 23 Oct	LOW	MED	MED
Sat 24 Oct	LOW	MED	HIGH
Sun 25 Oct	LOW	HIGH	HIGH

Map of Portland (45.5152°, -122.6784°)

More in United States

Seattle Sacramento San Francisco San Jose Salt Lake City Las Vegas

What Pollen Levels Mean

LOW Symptoms are unlikely

MED Moderate risk of symptoms

HIGH Widespread symptoms likely

V.HI Expect significant symptoms

X.HI Extremely high symptom likelihood & severity