Name: Pollen forecast for Cheltenham (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:26Z
License: https://pollencount.org/terms/

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About Pollen in Cheltenham

Cheltenham experiences significant seasonal allergies; dominant spring tree pollens, Birch and Oak, are prevalent from March to May, dispersing from mature urban parklands like Pittville Park and Imperial Gardens; summer grass pollen peaks June through July, originating from the River Chelt’s floodplains and surrounding Cotswold meadows. Cheltenham’s valley location, nestled by the Cotswolds, can concentrate airborne pollen, intensifying local impact; autumn’s allergen profile shifts to mould spores, heightened from September onwards, arising from damp leaf litter decomposition in shaded park areas and local woodlands.

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

HIGH

15 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed MED

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass LOW

Tree LOW

Weed HIGH

Species	Level	Count
🌿 Mugwort	HIGH	21 grains/m³
🌿 Giant Ragweed	HIGH	20 grains/m³
🌿 Common Ragweed	HIGH	17 grains/m³
🌾 Grass (mixed)	MED	14 grains/m³
🌾 Timothy Grass	MED	12 grains/m³
+35 more tracked Cock's-foot Russian Thistle Sagebrush Perennial Ryegrass Stinging Nettle Fat Hen Pigweed 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
🌿 Giant Ragweed	HIGH	18 grains/m³
🌿 Mugwort	HIGH	18 grains/m³
🌿 Common Ragweed	HIGH	15 grains/m³
🌾 Grass (mixed)	MED	12 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
+35 more tracked Russian Thistle Sagebrush Cock's-foot Perennial Ryegrass Stinging Nettle Fat Hen Pigweed 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
🌿 Giant Ragweed	HIGH	20 grains/m³
🌿 Mugwort	HIGH	20 grains/m³
🌿 Common Ragweed	HIGH	17 grains/m³
🌾 Grass (mixed)	MED	13 grains/m³
🌾 Timothy Grass	MED	11 grains/m³
+35 more tracked Russian Thistle Sagebrush Cock's-foot Stinging Nettle Fat Hen Perennial Ryegrass Pigweed 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	HIGH	15 grains/m³
🌿 Giant Ragweed	MED	14 grains/m³
🌿 Common Ragweed	MED	12 grains/m³
🌾 Grass (mixed)	MED	10 grains/m³
🌾 Timothy Grass	MED	8 grains/m³
+35 more tracked Cock's-foot Russian Thistle Sagebrush Fat Hen Perennial Ryegrass Stinging Nettle Pigweed 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

Last updated: 15:30 UTC

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

Map of Cheltenham (51.896785°, -2.084904°)

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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