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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.

MED

13 active species

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4-Day Forecast:

Morning

Grass MED

Tree HIGH

Weed LOW

Afternoon

Grass MED

Tree MED

Weed MED

Evening

Grass LOW

Tree MED

Weed LOW

Species	Level	Count
🌳 Holm Oak	MED	43 grains/m³
🌳 White Oak	MED	34 grains/m³
🌳 London Plane	MED	32 grains/m³
🌳 English Oak	MED	26 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
+35 more tracked Ribwort Plantain Cock's-foot Common Sorrel Pigweed Grass (mixed) Stinging Nettle Fat Hen Timothy Grass Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort 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 Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 Holm Oak	V.HI	144 grains/m³
🌳 White Oak	V.HI	114 grains/m³
🌳 London Plane	V.HI	107 grains/m³
🌳 English Oak	HIGH	88 grains/m³
🌾 Perennial Ryegrass	MED	16 grains/m³
+35 more tracked Ribwort Plantain Cock's-foot Common Sorrel Grass (mixed) Stinging Nettle Pigweed Timothy Grass Fat Hen Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort 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 Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 Holm Oak	V.HI	153 grains/m³
🌳 White Oak	V.HI	122 grains/m³
🌳 London Plane	V.HI	114 grains/m³
🌳 English Oak	HIGH	93 grains/m³
🌿 Ribwort Plantain	HIGH	20 grains/m³
+35 more tracked Perennial Ryegrass Common Sorrel Stinging Nettle Pigweed Cock's-foot Grass (mixed) Fat Hen Timothy Grass Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort 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 Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 Holm Oak	V.HI	138 grains/m³
🌳 White Oak	V.HI	109 grains/m³
🌳 London Plane	V.HI	102 grains/m³
🌳 English Oak	HIGH	84 grains/m³
🌿 Ribwort Plantain	HIGH	28 grains/m³
+35 more tracked Common Sorrel Stinging Nettle Perennial Ryegrass Pigweed Cock's-foot Grass (mixed) Fat Hen Timothy Grass Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort 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 Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS

Last updated: 14:03 UTC

4-Day Forecast	Tree	Grass	Weed
Wed 20 May	MED	MED	MED
Thu 21 May	V.HI	MED	HIGH
Fri 22 May	V.HI	MED	HIGH
Sat 23 May	V.HI	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