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About Pollen in Havering

Havering’s allergy season begins with Birch pollen (late March-April) from mature trees in Raphael Park and Romford’s Cottons Park; Oak pollen (April-May) follows, prevalent in Hornchurch Country Park and Bedfords Park; summer’s peak is Grass pollen (late May-July), widespread across public green spaces and riverine meadows of the Ingrebourne and River Rom.

Urban topography across Havering, notably around central Romford, can trap and concentrate airborne pollen; late-season allergy concerns pivot to Mould spores (August-October), exacerbated by damp leaf litter decomposition within Thames Chase Community Forest and water-adjacent parklands like Dagenham Chase.

HIGH

10 active species

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4-Day Forecast:

Morning

Grass LOW

Tree X.HI

Weed LOW

Afternoon

Grass LOW

Tree HIGH

Weed LOW

Evening

Grass LOW

Tree MED

Weed LOW

Species	Level	Count
🌳 English Oak	HIGH	96 grains/m³
🌳 Holm Oak	HIGH	70 grains/m³
🌳 London Plane	HIGH	62 grains/m³
🌳 Paper Birch	HIGH	56 grains/m³
🌳 White Oak	HIGH	52 grains/m³
+35 more tracked Downy Birch Silver Birch Perennial Ryegrass Ribwort Plantain Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	V.HI	110 grains/m³
🌳 Holm Oak	HIGH	80 grains/m³
🌳 London Plane	HIGH	70 grains/m³
🌳 Paper Birch	HIGH	63 grains/m³
🌳 White Oak	HIGH	59 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	HIGH	92 grains/m³
🌳 Holm Oak	HIGH	67 grains/m³
🌳 London Plane	HIGH	59 grains/m³
🌳 Paper Birch	HIGH	53 grains/m³
🌳 White Oak	MED	49 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	V.HI	104 grains/m³
🌳 Holm Oak	HIGH	76 grains/m³
🌳 London Plane	HIGH	67 grains/m³
🌳 Paper Birch	HIGH	60 grains/m³
🌳 White Oak	HIGH	56 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm 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	V.HI	LOW	LOW
Fri 22 May	HIGH	LOW	MED
Sat 23 May	V.HI	LOW	MED

Map of Havering (51.564663°, 0.176227°)

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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