Name: Pollen forecast for Bournemouth (2026-05-20)
Creator: Pollen Count
Published: 2026-05-20T14:02:42Z
License: https://pollencount.org/terms/

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About Pollen in Bournemouth

Bournemouth’s spring allergy season, typically March-May, is dominated by tree pollen: Birch, Alder, and Oak are prevalent, stemming from established urban woodlands including Bournemouth Gardens and Queen’s Park; summer (May-July) sees high grass pollen counts originating from extensive parkland, local verges, and the wider Stour Valley catchment.

Coastal breezes can offer temporary relief; however, sheltered chine valleys like Alum Chine and Boscombe Chine can trap pollen, concentrating local levels; autumn (September-November) sees increased mould spore activity, generated by decaying leaf litter and damp conditions prevalent in wooded areas and the chine systems.

HIGH

13 active species

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4-Day Forecast:

Morning

Grass LOW

Tree V.HI

Weed LOW

Afternoon

Grass LOW

Tree HIGH

Weed LOW

Evening

Grass LOW

Tree MED

Weed LOW

Species	Level	Count
🌳 English Oak	HIGH	78 grains/m³
🌳 Holm Oak	HIGH	75 grains/m³
🌳 White Oak	HIGH	71 grains/m³
🌳 London Plane	HIGH	66 grains/m³
🌳 Paper Birch	MED	38 grains/m³
+35 more tracked Downy Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Pigweed Cock's-foot Grass (mixed) Stinging Nettle Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Silver Birch Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 English Oak	V.HI	187 grains/m³
🌳 Holm Oak	V.HI	179 grains/m³
🌳 White Oak	V.HI	170 grains/m³
🌳 London Plane	V.HI	158 grains/m³
🌳 Paper Birch	HIGH	91 grains/m³
+35 more tracked Downy Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Cock's-foot Pigweed Grass (mixed) Stinging Nettle Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Silver Birch Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 English Oak	X.HI	259 grains/m³
🌳 Holm Oak	X.HI	248 grains/m³
🌳 White Oak	X.HI	236 grains/m³
🌳 London Plane	X.HI	219 grains/m³
🌳 Paper Birch	V.HI	126 grains/m³
+35 more tracked Downy Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Cock's-foot Pigweed Grass (mixed) Stinging Nettle Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Silver Birch Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS
🌳 English Oak	V.HI	184 grains/m³
🌳 Holm Oak	V.HI	177 grains/m³
🌳 White Oak	V.HI	168 grains/m³
🌳 London Plane	V.HI	156 grains/m³
🌳 Paper Birch	HIGH	90 grains/m³
+35 more tracked Downy Birch Ribwort Plantain Common Sorrel Perennial Ryegrass Cock's-foot Pigweed Stinging Nettle Grass (mixed) Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Silver Birch Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Black Poplar Mesquite Russian Thistle Field Elm All species in the app: Android iOS

Last updated: 14:02 UTC

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

Map of Bournemouth (50.741162°, -1.863236°)

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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