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

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About Pollen in Gloucester

Birch pollen, late March-April, originates from Gloucester Park and city’s mature trees; Oak pollen follows, April-May, prevalent near Robinswood Hill Country Park fringes and River Severn banks. Grass pollen dominates May-July, primarily from Alney Island’s open spaces, urban green verges, and riverside meadows.

Gloucester’s basin topography and urban structures trap airborne pollen, intensifying local concentrations; prevailing south-westerly winds from rural areas increase overall load. Autumn/Winter, mould spores rise from decaying leaf litter in areas like Barnwood Park and damp canal-side vegetation, persisting through mild, wet periods.

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

HIGH

15 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass HIGH

Tree LOW

Weed HIGH

Evening

Grass LOW

Tree LOW

Weed HIGH

Species	Level	Count
🌿 Mugwort	HIGH	26 grains/m³
🌿 Giant Ragweed	HIGH	25 grains/m³
🌿 Common Ragweed	HIGH	21 grains/m³
🌾 Grass (mixed)	HIGH	21 grains/m³
🌾 Timothy Grass	MED	17 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Russian Thistle Fat Hen Stinging Nettle Pigweed Western Ragweed Ribwort Plantain Sagebrush 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	35 grains/m³
🌿 Giant Ragweed	V.HI	33 grains/m³
🌿 Common Ragweed	HIGH	28 grains/m³
🌾 Grass (mixed)	MED	18 grains/m³
🌿 Russian Thistle	HIGH	16 grains/m³
+35 more tracked Timothy Grass Stinging Nettle Fat Hen Cock's-foot Perennial Ryegrass Pigweed Ribwort Plantain Western Ragweed Sagebrush 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	V.HI	32 grains/m³
🌿 Common Ragweed	HIGH	28 grains/m³
🌾 Grass (mixed)	MED	19 grains/m³
🌾 Timothy Grass	MED	16 grains/m³
+35 more tracked Russian Thistle Fat Hen Cock's-foot Stinging Nettle Perennial Ryegrass Pigweed Ribwort Plantain Western Ragweed Sagebrush 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	HIGH	28 grains/m³
🌿 Giant Ragweed	HIGH	26 grains/m³
🌿 Common Ragweed	HIGH	22 grains/m³
🌾 Grass (mixed)	MED	14 grains/m³
🌿 Russian Thistle	MED	12 grains/m³
+35 more tracked Timothy Grass Stinging Nettle Fat Hen Pigweed Cock's-foot Perennial Ryegrass Western Ragweed Sagebrush 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	HIGH	HIGH
Wed 2 Sep	LOW	MED	V.HI
Thu 3 Sep	LOW	MED	V.HI
Fri 4 Sep	LOW	MED	HIGH

Map of Gloucester (51.857222°, -2.22845°)

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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