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About Pollen in Hereford

Hereford’s spring allergen profile (March-May) features dominant Birch and Oak pollen from city parks like Castle Green and surrounding deciduous woodlands; Alder contributes earlier (February-March) along the River Wye banks; summer (May-July) sees high grass pollen levels, particularly from Bishops Meadow, King George V Playing Fields, and surrounding agricultural areas. The Wye Valley’s topographical bowl often traps pollen, increasing local atmospheric concentrations; late-season (August-November) mould spores, exacerbated by Herefordshire’s damp conditions, originate from decaying vegetation and leaf litter prevalent in floodplains and urban green spaces.

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
🌳 Ash	HIGH	72 grains/m³
🌳 Silver Birch	HIGH	71 grains/m³
🌳 Downy Birch	MED	45 grains/m³
🌳 Black Poplar	MED	43 grains/m³
🌳 Field Elm	MED	43 grains/m³
+35 more tracked Box Elder Paper Birch English Oak White Oak Alder 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
🌳 Ash	HIGH	88 grains/m³
🌳 Silver Birch	HIGH	87 grains/m³
🌳 Downy Birch	HIGH	55 grains/m³
🌳 Black Poplar	HIGH	53 grains/m³
🌳 Field Elm	HIGH	53 grains/m³
+35 more tracked Box Elder 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
🌳 Ash	HIGH	93 grains/m³
🌳 Silver Birch	HIGH	92 grains/m³
🌳 Downy Birch	HIGH	58 grains/m³
🌳 Black Poplar	HIGH	56 grains/m³
🌳 Field Elm	HIGH	56 grains/m³
+35 more tracked Box Elder Paper Birch English Oak White Oak Alder 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
🌳 Ash	HIGH	98 grains/m³
🌳 Silver Birch	HIGH	97 grains/m³
🌳 Downy Birch	HIGH	61 grains/m³
🌳 Black Poplar	HIGH	59 grains/m³
🌳 Field Elm	HIGH	59 grains/m³
+35 more tracked Box Elder Paper Birch English Oak White Oak Alder 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: 14:02 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	HIGH	LOW	LOW

Map of Hereford (52.056463°, -2.693815°)

More in United Kingdom

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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