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About Pollen in Grimsby

Grimsby experiences peak tree pollen from March to May, primarily Birch and Oak, originating from People’s Park, Grant Thorold Park, and residential street trees; Grass pollen dominates May through July, sourced from River Freshney embankments, surrounding agricultural fields, and urban green verges.

Grimsby’s coastal proximity and flat landscape modify pollen dispersal; sea breezes can clear, yet urban corridors and sheltered areas accumulate. Late autumn brings heightened mould spore counts, September-November, due to damp leaf decomposition in Grimsby’s parklands and shaded urban areas.

HIGH

11 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
🌳 Silver Birch	HIGH	72 grains/m³
🌳 Downy Birch	HIGH	50 grains/m³
🌳 Paper Birch	MED	39 grains/m³
🌳 Ash	MED	36 grains/m³
🌳 Black Poplar	MED	30 grains/m³
+35 more tracked Box Elder English Oak Field Elm Holm Oak White Oak London Plane Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	92 grains/m³
🌳 Downy Birch	HIGH	64 grains/m³
🌳 Paper Birch	MED	49 grains/m³
🌳 Ash	MED	46 grains/m³
🌳 Black Poplar	MED	38 grains/m³
+35 more tracked Box Elder English Oak Field Elm Holm Oak White Oak London Plane Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	76 grains/m³
🌳 Downy Birch	HIGH	53 grains/m³
🌳 Paper Birch	MED	41 grains/m³
🌳 Ash	MED	38 grains/m³
🌳 Box Elder	MED	31 grains/m³
+35 more tracked Black Poplar English Oak Field Elm Holm Oak White Oak London Plane Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	104 grains/m³
🌳 Downy Birch	HIGH	72 grains/m³
🌳 Paper Birch	HIGH	56 grains/m³
🌳 Ash	HIGH	52 grains/m³
🌳 Box Elder	MED	42 grains/m³
+35 more tracked Black Poplar English Oak Field Elm Holm Oak White Oak London Plane Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle 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	HIGH	LOW	LOW
Fri 22 May	HIGH	LOW	LOW
Sat 23 May	V.HI	LOW	LOW

Map of Grimsby (53.561068°, -0.095959°)

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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