Name: Pollen forecast for Cheltenham (2026-09-04)
Creator: Pollen Count
Published: 2026-09-04T15:01:44Z
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 Giant Ragweed.

HIGH

15 active species

Refreshing live forecast…

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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 MED

Species	Level	Count
🌿 Giant Ragweed	HIGH	16 grains/m³
🌿 Mugwort	HIGH	15 grains/m³
🌿 Common Ragweed	MED	14 grains/m³
🌾 Grass (mixed)	MED	11 grains/m³
🌾 Timothy Grass	MED	9 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Russian Thistle Western Ragweed Sagebrush Fat Hen Stinging Nettle Pigweed 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	22 grains/m³
🌿 Mugwort	HIGH	20 grains/m³
🌿 Common Ragweed	HIGH	18 grains/m³
🌾 Grass (mixed)	MED	13 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Russian Thistle Western Ragweed Sagebrush Stinging Nettle Fat Hen Pigweed 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	V.HI	48 grains/m³
🌿 Mugwort	V.HI	45 grains/m³
🌿 Common Ragweed	V.HI	39 grains/m³
🌾 Grass (mixed)	HIGH	23 grains/m³
🌾 Timothy Grass	MED	18 grains/m³
+35 more tracked Russian Thistle Western Ragweed Sagebrush Cock's-foot Perennial Ryegrass Stinging Nettle Fat Hen Pigweed 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	19 grains/m³
🌿 Mugwort	HIGH	18 grains/m³
🌿 Common Ragweed	HIGH	16 grains/m³
🌾 Grass (mixed)	MED	13 grains/m³
🌾 Timothy Grass	MED	10 grains/m³
+35 more tracked Perennial Ryegrass Cock's-foot Russian Thistle Western Ragweed Sagebrush Fat Hen Stinging Nettle Pigweed 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: 15:01 UTC

4-Day Forecast	Tree	Grass	Weed
Fri 4 Sep	LOW	MED	HIGH
Sat 5 Sep	LOW	MED	HIGH
Sun 6 Sep	LOW	HIGH	V.HI
Mon 7 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