Name: Pollen forecast for Oldham (2026-05-20)
Creator: Pollen Count
Published: 2026-05-20T14:02:59Z
License: https://pollencount.org/terms/

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About Pollen in Oldham

Oldham’s allergy season commences early spring (March-May) with Birch and Oak pollen; prevalent across Alexandra Park, Tandle Hill Country Park, and local woodland. Summer (May-July) brings high grass pollen counts from urban verges, Medlock Valley, and Saddleworth Moor fringes.

Oldham’s elevated topography within the Pennine foothills can trap pollen, locally intensifying concentrations. Late autumn-winter, mould spores proliferate; generated by damp leaf litter decomposition in parks and shaded, moist environments.

MED

9 active species

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4-Day Forecast:

Morning

Grass LOW

Tree HIGH

Weed LOW

Afternoon

Grass LOW

Tree MED

Weed LOW

Evening

Grass LOW

Tree LOW

Weed LOW

Species	Level	Count
🌳 Ash	MED	35 grains/m³
🌳 Silver Birch	MED	27 grains/m³
🌳 Field Elm	MED	26 grains/m³
🌳 Alder	MED	20 grains/m³
🌳 Box Elder	MED	18 grains/m³
+35 more tracked Black Poplar Downy Birch Paper Birch English Oak 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 London Plane Grass (mixed) Mesquite White Oak Holm Oak Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Ash	HIGH	58 grains/m³
🌳 Silver Birch	MED	45 grains/m³
🌳 Field Elm	MED	43 grains/m³
🌳 Alder	MED	33 grains/m³
🌳 Box Elder	MED	29 grains/m³
+35 more tracked Black Poplar Downy Birch Paper Birch English Oak White Oak 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 London Plane Grass (mixed) Mesquite Holm Oak Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Ash	HIGH	59 grains/m³
🌳 Silver Birch	MED	46 grains/m³
🌳 Field Elm	MED	44 grains/m³
🌳 Alder	MED	33 grains/m³
🌳 Black Poplar	MED	30 grains/m³
+35 more tracked Box Elder Downy Birch Paper Birch English Oak White Oak 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 London Plane Grass (mixed) Mesquite Holm Oak Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Ash	HIGH	59 grains/m³
🌳 Silver Birch	MED	46 grains/m³
🌳 Field Elm	MED	44 grains/m³
🌳 Alder	MED	34 grains/m³
🌳 Box Elder	MED	30 grains/m³
+35 more tracked Black Poplar Downy Birch Paper Birch English Oak White Oak 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 London Plane Grass (mixed) Mesquite Holm Oak 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	MED	LOW	LOW
Thu 21 May	HIGH	LOW	LOW
Fri 22 May	HIGH	LOW	LOW
Sat 23 May	HIGH	LOW	LOW

Map of Oldham (53.534973°, -2.121595°)

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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