Name: Pollen forecast for Boston (2026-10-22)
Creator: Pollen Count
Published: 2026-10-22T15:56:48Z
License: https://pollencount.org/terms/

The pollen count in Boston today is moderate, driven mainly by Perennial Ryegrass.

MED

14 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed LOW

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass MED

Tree LOW

Weed HIGH

Species	Level	Count
🌾 Perennial Ryegrass	MED	15 grains/m³
🌾 Timothy Grass	MED	15 grains/m³
🌾 Grass (mixed)	MED	15 grains/m³
🌿 Mugwort	MED	14 grains/m³
🌾 Cock's-foot	MED	14 grains/m³
+35 more tracked Bermuda Grass 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 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	MED	8 grains/m³
🌾 Grass (mixed)	MED	7 grains/m³
🌾 Cock's-foot	MED	6 grains/m³
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
+35 more tracked Bermuda Grass 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 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	X.HI	52 grains/m³
🌾 Grass (mixed)	HIGH	32 grains/m³
🌾 Perennial Ryegrass	HIGH	31 grains/m³
🌿 Pellitory-of-the-wall	V.HI	30 grains/m³
🌾 Timothy Grass	HIGH	30 grains/m³
+35 more tracked Cock's-foot Upright Pellitory Stinging Nettle Fat Hen Bermuda Grass Pigweed 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 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	28 grains/m³
🌾 Perennial Ryegrass	MED	16 grains/m³
🌿 Pellitory-of-the-wall	HIGH	16 grains/m³
🌾 Grass (mixed)	MED	16 grains/m³
🌾 Cock's-foot	MED	15 grains/m³
+35 more tracked Upright Pellitory Timothy Grass Stinging Nettle Fat Hen Pigweed Bermuda Grass 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 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	HIGH	X.HI
Sun 25 Oct	LOW	MED	HIGH

Map of Boston (42.3601°, -71.0589°)

More in United States

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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