Name: Pollen forecast for St Albans (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:42Z
License: https://pollencount.org/terms/

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About Pollen in St Albans

St Albans experiences early spring Birch and Ash pollen, originating from mature street trees and Verulamium Park; Oak pollen follows mid-spring from historic parkland. Summer peaks with high Grass pollen from River Ver meadows, Batchwood Golf Course, and other expansive urban green spaces.

The city’s basin-like topography and urban canyons can intensify pollen trapping. Late season (autumn-winter) features elevated Mould spore counts, driven by damp leaf decomposition in parks, shaded areas, and along the Alban Way, exacerbated by River Ver humidity.

The pollen count in St Albans today is HIGH, driven mainly by Mugwort.

HIGH

15 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed HIGH

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass MED

Tree LOW

Weed V.HI

Species	Level	Count
🌿 Mugwort	HIGH	29 grains/m³
🌿 Giant Ragweed	HIGH	24 grains/m³
🌿 Common Ragweed	HIGH	21 grains/m³
🌿 Sagebrush	HIGH	18 grains/m³
🌾 Grass (mixed)	MED	12 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Cock's-foot Stinging Nettle Russian Thistle 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
🌿 Mugwort	V.HI	42 grains/m³
🌿 Giant Ragweed	V.HI	34 grains/m³
🌿 Common Ragweed	HIGH	29 grains/m³
🌿 Sagebrush	HIGH	26 grains/m³
🌾 Perennial Ryegrass	MED	14 grains/m³
+35 more tracked Grass (mixed) Cock's-foot Timothy Grass Stinging Nettle Russian Thistle Pigweed Fat Hen 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
🌿 Mugwort	V.HI	38 grains/m³
🌿 Giant Ragweed	V.HI	31 grains/m³
🌿 Common Ragweed	HIGH	26 grains/m³
🌿 Sagebrush	HIGH	23 grains/m³
🌿 Stinging Nettle	MED	10 grains/m³
+35 more tracked Grass (mixed) Russian Thistle Pigweed Fat Hen Cock's-foot Perennial Ryegrass Timothy Grass 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
🌿 Mugwort	V.HI	34 grains/m³
🌿 Giant Ragweed	HIGH	28 grains/m³
🌿 Common Ragweed	HIGH	24 grains/m³
🌿 Sagebrush	HIGH	21 grains/m³
🌿 Stinging Nettle	MED	9 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Russian Thistle Pigweed Fat Hen 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

Last updated: 15:30 UTC

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

Map of St Albans (51.754284°, -0.321448°)

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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