Name: Pollen forecast for Philadelphia (2026-10-22)
Creator: Pollen Count
Published: 2026-10-22T15:56:44Z
License: https://pollencount.org/terms/

The pollen count in Philadelphia today is high, driven mainly by Perennial Ryegrass.

HIGH

14 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass MED

Tree LOW

Weed MED

Species	Level	Count
🌾 Perennial Ryegrass	MED	19 grains/m³
🌾 Grass (mixed)	MED	19 grains/m³
🌾 Cock's-foot	MED	17 grains/m³
🌾 Timothy Grass	MED	16 grains/m³
🌿 Mugwort	HIGH	15 grains/m³
+35 more tracked Bermuda Grass Pellitory-of-the-wall Upright Pellitory Pigweed Fat Hen Russian Thistle Stinging Nettle Ribwort Plantain 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
🌾 Grass (mixed)	MED	9 grains/m³
🌾 Cock's-foot	MED	8 grains/m³
🌾 Perennial Ryegrass	MED	8 grains/m³
🌿 Mugwort	MED	7 grains/m³
🌾 Timothy Grass	MED	7 grains/m³
+35 more tracked Bermuda Grass Pellitory-of-the-wall Upright Pellitory Pigweed Fat Hen Ribwort Plantain Russian Thistle Stinging Nettle 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
🌾 Perennial Ryegrass	MED	9 grains/m³
🌾 Grass (mixed)	MED	9 grains/m³
🌿 Mugwort	MED	8 grains/m³
🌾 Cock's-foot	MED	8 grains/m³
🌾 Timothy Grass	MED	8 grains/m³
+35 more tracked Bermuda Grass Pellitory-of-the-wall Upright Pellitory Fat Hen Russian Thistle Stinging Nettle Pigweed Ribwort Plantain 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
🌾 Perennial Ryegrass	MED	12 grains/m³
🌾 Grass (mixed)	MED	12 grains/m³
🌿 Mugwort	MED	11 grains/m³
🌾 Cock's-foot	MED	11 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
+35 more tracked Bermuda Grass Pellitory-of-the-wall Upright Pellitory Pigweed Fat Hen Ribwort Plantain Russian Thistle Stinging Nettle 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	HIGH
Fri 23 Oct	LOW	MED	MED
Sat 24 Oct	LOW	MED	MED
Sun 25 Oct	LOW	MED	MED

Map of Philadelphia (39.9526°, -75.1652°)

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