Name: Pollen forecast for Havering (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:32Z
License: https://pollencount.org/terms/

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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.

The pollen count in Havering today is HIGH, driven mainly by Giant Ragweed.

HIGH

15 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Giant Ragweed	HIGH	20 grains/m³
🌿 Common Ragweed	HIGH	17 grains/m³
🌿 Mugwort	MED	12 grains/m³
🌾 Perennial Ryegrass	MED	10 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
+35 more tracked Grass (mixed) Cock's-foot Sagebrush Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Western Ragweed Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌿 Giant Ragweed	HIGH	23 grains/m³
🌿 Common Ragweed	HIGH	20 grains/m³
🌿 Mugwort	MED	13 grains/m³
🌾 Perennial Ryegrass	MED	10 grains/m³
🌾 Grass (mixed)	MED	10 grains/m³
+35 more tracked Sagebrush Cock's-foot Timothy Grass Stinging Nettle Pigweed Fat Hen Russian Thistle Western Ragweed Ribwort Plantain Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌿 Giant Ragweed	HIGH	27 grains/m³
🌿 Common Ragweed	HIGH	23 grains/m³
🌿 Mugwort	HIGH	15 grains/m³
🌿 Sagebrush	MED	10 grains/m³
🌿 Stinging Nettle	MED	8 grains/m³
+35 more tracked Fat Hen Perennial Ryegrass Grass (mixed) Russian Thistle Pigweed Western Ragweed Cock's-foot Timothy Grass Ribwort Plantain Common Sorrel Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌿 Giant Ragweed	HIGH	18 grains/m³
🌿 Common Ragweed	HIGH	15 grains/m³
🌿 Mugwort	MED	10 grains/m³
🌿 Sagebrush	MED	7 grains/m³
🌿 Stinging Nettle	MED	6 grains/m³
+35 more tracked Russian Thistle Pigweed Western Ragweed Fat Hen Ribwort Plantain Perennial Ryegrass Timothy Grass Grass (mixed) Common Sorrel Cock's-foot Box Elder Alder Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS

Last updated: 15:30 UTC

4-Day Forecast	Tree	Grass	Weed
Tue 1 Sep	LOW	MED	HIGH
Wed 2 Sep	LOW	MED	HIGH
Thu 3 Sep	LOW	MED	HIGH
Fri 4 Sep	LOW	LOW	HIGH

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