Name: Pollen forecast for Harlow (2026-10-17)
Creator: Pollen Count
Published: 2026-10-17T14:18:20Z
License: https://pollencount.org/terms/

🌿

About Pollen in Harlow

Harlow’s seasonal allergy profile begins late March with high Birch and Oak pollen from mature trees within Harlow Town Park and surrounding urban green spaces; June and July bring significant Grass pollen from River Stort Valley meadows and peripheral green belts.

Urban-rural interfaces and sheltered residential areas often exacerbate local pollen concentrations due to trapping; late autumn sees elevated Mould spore levels from damp leaf litter decomposition in parks and gardens.

The pollen count in Harlow today is moderate, driven mainly by Mugwort.

MED

13 active species

Refreshing live forecast…

.forecast-refresh-status{display:none!important}.date-tab{cursor:default;opacity:.55}Showing today's cached forecast. Enable JavaScript to switch days and load live data.

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	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
🌾 Grass (mixed)	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	5 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌾 Perennial Ryegrass	MED	5 grains/m³
🌾 Timothy Grass	MED	5 grains/m³
🌾 Grass (mixed)	MED	5 grains/m³
+35 more tracked Western Ragweed Sagebrush 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
🌿 Mugwort	MED	9 grains/m³
🌿 Sagebrush	MED	7 grains/m³
🌿 Western Ragweed	MED	6 grains/m³
🌾 Perennial Ryegrass	MED	6 grains/m³
🌾 Timothy Grass	MED	6 grains/m³
+35 more tracked Grass (mixed) Cock's-foot 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	6 grains/m³
🌿 Western Ragweed	MED	5 grains/m³
🌿 Russian Thistle	LOW	4 grains/m³
🌿 Stinging Nettle	LOW	4 grains/m³
+35 more tracked Pigweed Fat Hen Cock's-foot Perennial Ryegrass Timothy Grass Ribwort Plantain Grass (mixed) 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 Harlow (51.785164°, 0.097813°)

More in United Kingdom

Welwyn Garden City Waltham Forest Stevenage Enfield Havering Redbridge

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