Name: Pollen forecast for London (2026-10-07)
Creator: Pollen Count
Published: 2026-10-07T17:52:17Z
License: https://pollencount.org/terms/

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About Pollen in London

London’s spring allergy season (March-May) is dominated by Birch and Plane pollen; Birch (Betula) prolific in Hyde Park and Regents Park; London Plane (Platanus x acerifolia) widespread across city streets and squares. Oak (Quercus) contributes significantly from larger London parks. Summer (May-July) sees high Grass (Poaceae) pollen levels, originating from extensive parklands like Richmond Park and along River Thames riverbanks.

Urban street canyons and dense architecture can trap pollen, leading to localised high concentrations. Autumn and winter see elevated Mould (Alternaria, Cladosporium) spore counts, primarily from decomposing leaf litter in parklands and damp city environments, concluding the annual allergy cycle.

The pollen count in London today is moderate, driven mainly by Giant Ragweed.

MED

15 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass LOW

Tree LOW

Weed MED

Afternoon

Grass LOW

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Giant Ragweed	MED	12 grains/m³
🌿 Western Ragweed	MED	10 grains/m³
🌿 Common Ragweed	MED	6 grains/m³
🌿 Mugwort	LOW	4 grains/m³
🌿 Pigweed	LOW	2 grains/m³
+35 more tracked Sagebrush Fat Hen Cock's-foot Perennial Ryegrass Timothy Grass Ribwort Plantain Grass (mixed) Russian Thistle Stinging Nettle 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	MED	14 grains/m³
🌿 Western Ragweed	MED	12 grains/m³
🌿 Common Ragweed	MED	6 grains/m³
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Grass (mixed)	MED	6 grains/m³
+35 more tracked Mugwort Cock's-foot Timothy Grass Sagebrush Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle 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	MED	14 grains/m³
🌿 Western Ragweed	MED	12 grains/m³
🌿 Common Ragweed	MED	7 grains/m³
🌿 Mugwort	MED	5 grains/m³
🌿 Sagebrush	LOW	3 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle 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	MED	11 grains/m³
🌿 Western Ragweed	MED	9 grains/m³
🌿 Common Ragweed	MED	5 grains/m³
🌿 Mugwort	LOW	4 grains/m³
🌾 Cock's-foot	LOW	4 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Grass (mixed) Pigweed Sagebrush Fat Hen Ribwort Plantain Russian Thistle Stinging Nettle 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

Last updated: 17:52 UTC

4-Day Forecast	Tree	Grass	Weed
Wed 7 Oct	LOW	LOW	MED
Thu 8 Oct	LOW	MED	MED
Fri 9 Oct	LOW	LOW	MED
Sat 10 Oct	LOW	LOW	MED

Map of London (51.514731°, -0.09213°)

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