Name: Pollen forecast for Chelmsford (2026-10-17)
Creator: Pollen Count
Published: 2026-10-17T14:18:15Z
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 moderate, driven mainly by Mugwort.

MED

13 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass LOW

Tree LOW

Weed LOW

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Mugwort	MED	6 grains/m³
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
🌾 Grass (mixed)	MED	6 grains/m³
🌿 Sagebrush	MED	5 grains/m³
+35 more tracked Cock's-foot Western Ragweed Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Grass (mixed)	MED	6 grains/m³
🌿 Mugwort	MED	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
+35 more tracked Sagebrush Western Ragweed Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Box Elder Alder Common Ragweed Giant Ragweed 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	MED	7 grains/m³
🌿 Sagebrush	MED	6 grains/m³
🌿 Western Ragweed	MED	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
+35 more tracked Timothy Grass Grass (mixed) Stinging Nettle Pigweed Fat Hen Ribwort Plantain Russian Thistle Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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	MED	8 grains/m³
🌿 Sagebrush	MED	7 grains/m³
🌿 Western Ragweed	MED	5 grains/m³
🌿 Fat Hen	LOW	4 grains/m³
🌾 Cock's-foot	LOW	4 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Grass (mixed) Russian Thistle Stinging Nettle Pigweed Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Giant Ragweed 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: 14:18 UTC

4-Day Forecast	Tree	Grass	Weed
Sat 17 Oct	LOW	MED	MED
Sun 18 Oct	LOW	MED	MED
Mon 19 Oct	LOW	MED	MED
Tue 20 Oct	LOW	LOW	MED

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