Name: Pollen forecast for Chelmsford (2026-10-08)
Creator: Pollen Count
Published: 2026-10-08T17:55:25Z
License: https://pollencount.org/terms/

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About Pollen in Chelmsford

Chelmsford’s spring allergy profile, late March to May, features peak Birch and Oak pollen, largely sourced from Central Park and Admirals Park arboreal zones; summer, June to August, sees high grass pollen from River Chelmer and River Can floodplains and surrounding meadows. The city’s basin topography, particularly near Hylands Park, can create pollen trapping effects, intensifying localised allergen exposure; late autumn, September through November, experiences elevated mould spore levels, primarily from damp leaf decomposition in urban woodlands and riparian zones.

The pollen count in Chelmsford today is high, driven mainly by Giant Ragweed.

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 MED

Tree LOW

Weed X.HI

Species	Level	Count
🌿 Giant Ragweed	HIGH	18 grains/m³
🌿 Western Ragweed	HIGH	15 grains/m³
🌾 Cock's-foot	MED	8 grains/m³
🌾 Perennial Ryegrass	MED	8 grains/m³
🌾 Timothy Grass	MED	8 grains/m³
+35 more tracked Grass (mixed) Common Ragweed Mugwort Sagebrush Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle 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	17 grains/m³
🌿 Western Ragweed	MED	14 grains/m³
🌿 Common Ragweed	MED	7 grains/m³
🌿 Mugwort	MED	7 grains/m³
🌿 Sagebrush	MED	5 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Grass (mixed) Cock's-foot Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle 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	MED	12 grains/m³
🌿 Western Ragweed	MED	11 grains/m³
🌿 Common Ragweed	MED	5 grains/m³
🌿 Mugwort	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
+35 more tracked Grass (mixed) Sagebrush Cock's-foot Timothy Grass Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle 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
🌿 Western Ragweed	HIGH	17 grains/m³
🌿 Common Ragweed	MED	8 grains/m³
🌿 Mugwort	MED	8 grains/m³
🌾 Grass (mixed)	MED	7 grains/m³
+35 more tracked Sagebrush Cock's-foot Perennial Ryegrass Timothy Grass Russian Thistle Stinging Nettle Pigweed Fat Hen 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: 17:55 UTC

4-Day Forecast	Tree	Grass	Weed
Thu 8 Oct	LOW	MED	HIGH
Fri 9 Oct	LOW	MED	HIGH
Sat 10 Oct	LOW	MED	MED
Sun 11 Oct	LOW	MED	HIGH

Map of Chelmsford (51.719099°, 0.480658°)

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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