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About Pollen in York

York’s allergy profile commences March-April with Birch and Elm pollen, originating from urban green spaces like Rowntree Park and Museum Gardens; Oak pollen follows into May from city parklands. Grass pollen dominates May-July, primarily from Ouse/Foss riverbanks and open areas such as Knavesmire, exacerbated by dry, windy conditions.

York’s urban landscape, particularly its river valleys and built environment, can concentrate airborne allergens; prevailing south-westerly winds commonly disseminate pollen throughout the city. Late-season allergies (September-November) predominantly involve mould spores, stemming from damp leaf litter and decaying organic matter in parklands like St Nicholas Fields, intensified by autumn rainfall and high humidity.

MED

11 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 MED

Weed LOW

Species	Level	Count
🌳 Silver Birch	MED	40 grains/m³
🌳 Ash	MED	37 grains/m³
🌳 Downy Birch	MED	26 grains/m³
🌳 Box Elder	MED	24 grains/m³
🌳 Black Poplar	MED	24 grains/m³
+35 more tracked Field Elm Paper Birch English Oak Alder White Oak Holm 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 Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	68 grains/m³
🌳 Ash	HIGH	63 grains/m³
🌳 Downy Birch	MED	44 grains/m³
🌳 Black Poplar	MED	41 grains/m³
🌳 Box Elder	MED	40 grains/m³
+35 more tracked Field Elm Paper Birch English Oak Alder White Oak Holm 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 Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	61 grains/m³
🌳 Ash	HIGH	56 grains/m³
🌳 Downy Birch	MED	39 grains/m³
🌳 Box Elder	MED	36 grains/m³
🌳 Black Poplar	MED	36 grains/m³
+35 more tracked Field Elm Paper Birch English Oak Alder White Oak Holm 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 Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	56 grains/m³
🌳 Ash	HIGH	51 grains/m³
🌳 Downy Birch	MED	35 grains/m³
🌳 Black Poplar	MED	33 grains/m³
🌳 Box Elder	MED	32 grains/m³
+35 more tracked Field Elm Paper Birch English Oak Alder White Oak Holm 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 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	MED	LOW	LOW
Thu 21 May	HIGH	LOW	LOW
Fri 22 May	HIGH	LOW	LOW
Sat 23 May	HIGH	LOW	LOW

Map of York (53.964932°, -1.074627°)

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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