Name: Pollen forecast for St Helens (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:43Z
License: https://pollencount.org/terms/

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About Pollen in St Helens

St Helens’ seasonal allergy profile sees early spring (March-April) dominated by tree pollens: Hazel and Alder active near Bembridge Harbour; Birch and Oak prevalent across St Helens Green and village gardens. Late spring (May-June) adds Pine pollen. Summer (June-August) brings high Grass pollen from surrounding agricultural fields and coastal grasslands, notably St Helens Duver.

Coastal winds across St Helens Bay can disperse pollen; however, local sheltered areas and the Bembridge Harbour estuary environment may concentrate it. Autumn (September-November) brings elevated mould spore levels from decaying vegetation around the harbour fringes and damp leaf litter within village residential areas.

The pollen count in St Helens today is HIGH, driven mainly by Giant Ragweed.

HIGH

15 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Giant Ragweed	HIGH	27 grains/m³
🌿 Common Ragweed	HIGH	23 grains/m³
🌿 Mugwort	MED	14 grains/m³
🌾 Perennial Ryegrass	MED	11 grains/m³
🌾 Grass (mixed)	MED	11 grains/m³
+35 more tracked Cock's-foot Timothy Grass Stinging Nettle Western Ragweed Russian Thistle Pigweed Fat Hen Ribwort Plantain Sagebrush Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory 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	23 grains/m³
🌿 Common Ragweed	HIGH	19 grains/m³
🌿 Mugwort	MED	12 grains/m³
🌾 Grass (mixed)	MED	8 grains/m³
🌾 Cock's-foot	MED	7 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Western Ragweed Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Sagebrush Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory 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	21 grains/m³
🌿 Common Ragweed	HIGH	18 grains/m³
🌿 Mugwort	MED	12 grains/m³
🌿 Western Ragweed	MED	6 grains/m³
🌿 Russian Thistle	MED	6 grains/m³
+35 more tracked Stinging Nettle Pigweed Fat Hen Sagebrush Cock's-foot Perennial Ryegrass Timothy Grass Ribwort Plantain Grass (mixed) Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory 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	20 grains/m³
🌿 Common Ragweed	HIGH	17 grains/m³
🌿 Mugwort	MED	11 grains/m³
🌿 Stinging Nettle	MED	6 grains/m³
🌿 Pigweed	MED	5 grains/m³
+35 more tracked Western Ragweed Fat Hen Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Russian Thistle Sagebrush Ribwort Plantain Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS

Last updated: 15:30 UTC

4-Day Forecast	Tree	Grass	Weed
Tue 1 Sep	LOW	MED	HIGH
Wed 2 Sep	LOW	MED	HIGH
Thu 3 Sep	LOW	LOW	HIGH
Fri 4 Sep	LOW	MED	HIGH

Map of St Helens (50.697144°, -1.111097°)

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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