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About Pollen in Shrewsbury

Shrewsbury’s primary spring allergens, Birch and Oak, dominate March through May, emanating from The Quarry Park, local urban green spaces, and River Severn’s wooded banks; Grass pollen peaks May to July, sourced from flood plain meadows along the Severn and peripheral agricultural land.

The Severn’s looping geography and surrounding topography can create localised pollen trapping, exacerbated by dry, windy conditions; late season, September through November, Mould spores increase due to damp leaf litter decomposition in wooded areas and elevated riverine humidity.

HIGH

10 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	86 grains/m³
🌳 Ash	HIGH	70 grains/m³
🌳 Downy Birch	HIGH	57 grains/m³
🌳 Black Poplar	HIGH	52 grains/m³
🌳 Box Elder	HIGH	50 grains/m³
+35 more tracked Paper Birch Field Elm English Oak White Oak Holm Oak 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 London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	159 grains/m³
🌳 Ash	V.HI	128 grains/m³
🌳 Downy Birch	V.HI	104 grains/m³
🌳 Black Poplar	HIGH	95 grains/m³
🌳 Box Elder	HIGH	92 grains/m³
+35 more tracked Paper Birch Field Elm English Oak White Oak Holm Oak 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 London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	108 grains/m³
🌳 Ash	HIGH	87 grains/m³
🌳 Downy Birch	HIGH	70 grains/m³
🌳 Black Poplar	HIGH	64 grains/m³
🌳 Box Elder	HIGH	63 grains/m³
+35 more tracked Paper Birch Field Elm English Oak White Oak Holm Oak 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 London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	112 grains/m³
🌳 Ash	HIGH	90 grains/m³
🌳 Downy Birch	HIGH	73 grains/m³
🌳 Black Poplar	HIGH	67 grains/m³
🌳 Box Elder	HIGH	65 grains/m³
+35 more tracked Paper Birch Field Elm English Oak White Oak Holm Oak 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 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	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 Shrewsbury (52.709347°, -2.789413°)

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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