Name: Pollen forecast for Seattle (2026-09-07)
Creator: Pollen Count
Published: 2026-09-07T16:34:27Z
License: https://pollencount.org/terms/

The pollen count in Seattle today is MED, driven mainly by Giant Ragweed.

MED

16 active species

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4-Day Forecast:

Morning

Grass LOW

Tree LOW

Weed MED

Afternoon

Grass LOW

Tree LOW

Weed MED

Evening

Grass MED

Tree LOW

Weed HIGH

Species	Level	Count
🌿 Giant Ragweed	MED	9 grains/m³
🌿 Common Ragweed	MED	7 grains/m³
🌿 Western Ragweed	LOW	3 grains/m³
🌿 Mugwort	LOW	3 grains/m³
🌾 Cock's-foot	LOW	3 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Grass (mixed) Pellitory-of-the-wall Upright Pellitory Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Stinging Nettle Box Elder Alder 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
🌿 Giant Ragweed	HIGH	17 grains/m³
🌿 Common Ragweed	MED	13 grains/m³
🌾 Perennial Ryegrass	MED	8 grains/m³
🌾 Grass (mixed)	MED	8 grains/m³
🌿 Western Ragweed	MED	7 grains/m³
+35 more tracked Cock's-foot Timothy Grass Mugwort Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Box Elder Alder 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
🌿 Giant Ragweed	HIGH	25 grains/m³
🌿 Common Ragweed	HIGH	19 grains/m³
🌾 Grass (mixed)	MED	12 grains/m³
🌾 Perennial Ryegrass	MED	11 grains/m³
🌿 Western Ragweed	MED	10 grains/m³
+35 more tracked Cock's-foot Timothy Grass Mugwort Pellitory-of-the-wall Upright Pellitory Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle Common Sorrel Box Elder Alder 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
🌿 Giant Ragweed	MED	8 grains/m³
🌿 Common Ragweed	MED	6 grains/m³
🌿 Western Ragweed	LOW	3 grains/m³
🌿 Mugwort	LOW	2 grains/m³
🌾 Cock's-foot	LOW	2 grains/m³
+35 more tracked Perennial Ryegrass Pellitory-of-the-wall Upright Pellitory Timothy Grass Grass (mixed) Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Stinging Nettle Box Elder Alder 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: 16:34 UTC

4-Day Forecast	Tree	Grass	Weed
Mon 7 Sep	LOW	LOW	MED
Tue 8 Sep	LOW	MED	HIGH
Wed 9 Sep	LOW	MED	HIGH
Thu 10 Sep	LOW	LOW	MED

Map of Seattle (47.6062°, -122.3321°)

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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