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About Pollen in Rochdale

Rochdale’s spring allergy profile peaks with tree pollens: Birch and Oak dominate March-May, originating from mature trees within Broadfield Park, Healey Dell Nature Reserve, and general urban green spaces; Grass pollen follows, intense May-July, widely dispersed from meadows, sports fields, and River Roch banks.

Topography influences local pollen concentrations; Rochdale’s valley location within the Pennine foothills can trap airborne allergens, exacerbating symptoms. Autumn sees increased mould spore activity (September-November) driven by damp conditions, leaf litter decomposition in wooded areas, and general urban humidity.

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	70 grains/m³
🌳 Downy Birch	HIGH	59 grains/m³
🌳 Paper Birch	MED	47 grains/m³
🌳 English Oak	MED	36 grains/m³
🌳 White Oak	MED	25 grains/m³
+35 more tracked Black Poplar Box Elder Ash Holm Oak London Plane Field Elm 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	133 grains/m³
🌳 Downy Birch	V.HI	113 grains/m³
🌳 Paper Birch	HIGH	89 grains/m³
🌳 English Oak	HIGH	69 grains/m³
🌳 White Oak	MED	48 grains/m³
+35 more tracked Box Elder Black Poplar Ash Holm Oak London Plane Field Elm 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	115 grains/m³
🌳 Downy Birch	HIGH	98 grains/m³
🌳 Paper Birch	HIGH	77 grains/m³
🌳 English Oak	HIGH	60 grains/m³
🌳 White Oak	MED	42 grains/m³
+35 more tracked Black Poplar Box Elder Ash Holm Oak London Plane Field Elm 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	105 grains/m³
🌳 Downy Birch	HIGH	89 grains/m³
🌳 Paper Birch	HIGH	70 grains/m³
🌳 English Oak	HIGH	54 grains/m³
🌳 White Oak	MED	38 grains/m³
+35 more tracked Box Elder Black Poplar Ash Holm Oak London Plane Field Elm 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: 14:03 UTC

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

Map of Rochdale (53.614495°, -2.14403°)

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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