Name: Pollen forecast for Westminster (2026-10-17)
Creator: Pollen Count
Published: 2026-10-17T14:18:33Z
License: https://pollencount.org/terms/

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About Pollen in Westminster

Spring sees dominant Birch and Oak pollen, March-May; originating from Regent’s Park, Hampstead Heath woodlands, and pervasive urban street trees across Westminster and Camden. Summer brings peak Grass pollen, May-July; sourced from park lawns, meadows, and river/canal banks.

Urban topography, including dense building structures and parkland proximity, can concentrate localised pollen levels. Autumn introduces mould spores, September-November; prevalent from damp leaf litter and decaying organic matter in shaded park areas and along the Regent’s Canal.

The pollen count in Westminster today is moderate, driven mainly by Perennial Ryegrass.

MED

13 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed LOW

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed LOW

Species	Level	Count
🌾 Perennial Ryegrass	MED	7 grains/m³
🌾 Grass (mixed)	MED	7 grains/m³
🌿 Mugwort	MED	6 grains/m³
🌾 Cock's-foot	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
+35 more tracked Western Ragweed Sagebrush Fat Hen Russian Thistle Stinging Nettle Pigweed Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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
🌾 Perennial Ryegrass	MED	7 grains/m³
🌾 Grass (mixed)	MED	7 grains/m³
🌿 Mugwort	MED	6 grains/m³
🌾 Cock's-foot	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
+35 more tracked Western Ragweed Sagebrush Fat Hen Russian Thistle Stinging Nettle Pigweed Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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
🌾 Grass (mixed)	MED	7 grains/m³
🌿 Mugwort	MED	6 grains/m³
🌾 Cock's-foot	MED	6 grains/m³
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
+35 more tracked Western Ragweed Sagebrush Pigweed Fat Hen Russian Thistle Stinging Nettle Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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
🌿 Mugwort	MED	12 grains/m³
🌿 Western Ragweed	MED	8 grains/m³
🌿 Sagebrush	MED	8 grains/m³
🌿 Russian Thistle	MED	6 grains/m³
🌿 Stinging Nettle	MED	6 grains/m³
+35 more tracked Pigweed Fat Hen Ribwort Plantain Common Sorrel Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Box Elder Alder Common Ragweed Giant Ragweed 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: 14:18 UTC

4-Day Forecast	Tree	Grass	Weed
Sat 17 Oct	LOW	MED	MED
Sun 18 Oct	LOW	MED	MED
Mon 19 Oct	LOW	MED	MED
Tue 20 Oct	LOW	LOW	MED

Map of Westminster (51.536514°, -0.159309°)

More in United Kingdom

Camden Kensington and Chelsea London Islington Tower Hamlets Hammersmith and Fulham

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