Name: Pollen forecast for Greenwich (2026-10-17)
Creator: Pollen Count
Published: 2026-10-17T14:18:19Z
License: https://pollencount.org/terms/

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About Pollen in Greenwich

Greenwich experiences peak tree pollen (Birch, Oak) March-May, originating from Greenwich Park’s mature woodlands, Blackheath’s perimeter trees, and street plantings; summer sees high grass pollen May-July from Greenwich’s extensive green spaces and Thames-side meadows. Urban topography in Greenwich traps pollen, amplifying local concentrations; autumn/winter mould spores from decaying vegetation, particularly near Thames Path damp zones, complete the seasonal profile.

The pollen count in Greenwich today is moderate, driven mainly by Mugwort.

MED

13 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass LOW

Tree LOW

Weed LOW

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed LOW

Species	Level	Count
🌿 Mugwort	MED	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
🌾 Grass (mixed)	MED	5 grains/m³
+35 more tracked Western Ragweed Sagebrush Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle 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
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
🌾 Grass (mixed)	MED	5 grains/m³
🌿 Mugwort	LOW	4 grains/m³
+35 more tracked Western Ragweed Sagebrush Pigweed Fat Hen Ribwort Plantain Russian Thistle Stinging Nettle 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	6 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Grass (mixed)	MED	5 grains/m³
🌿 Western Ragweed	LOW	4 grains/m³
🌾 Cock's-foot	LOW	4 grains/m³
+35 more tracked Timothy Grass Pigweed Sagebrush 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	9 grains/m³
🌿 Western Ragweed	MED	6 grains/m³
🌿 Sagebrush	MED	5 grains/m³
🌿 Stinging Nettle	MED	5 grains/m³
🌿 Pigweed	LOW	4 grains/m³
+35 more tracked Fat Hen Ribwort Plantain Russian Thistle Perennial Ryegrass Grass (mixed) Common Sorrel Cock's-foot Timothy Grass 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	LOW
Mon 19 Oct	LOW	MED	MED
Tue 20 Oct	LOW	LOW	MED

Map of Greenwich (51.475803°, 0.108329°)

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