Name: Pollen forecast for Harlow (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:32Z
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 HIGH, driven mainly by Mugwort.

HIGH

15 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 MED

Tree LOW

Weed HIGH

Afternoon

Grass MED

Tree LOW

Weed HIGH

Evening

Grass MED

Tree LOW

Weed V.HI

Species	Level	Count
🌿 Mugwort	HIGH	27 grains/m³
🌿 Giant Ragweed	HIGH	21 grains/m³
🌿 Common Ragweed	HIGH	18 grains/m³
🌿 Sagebrush	HIGH	18 grains/m³
🌾 Perennial Ryegrass	MED	10 grains/m³
+35 more tracked Grass (mixed) Cock's-foot Timothy Grass Stinging Nettle Fat Hen Russian Thistle 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
🌿 Mugwort	V.HI	33 grains/m³
🌿 Giant Ragweed	HIGH	27 grains/m³
🌿 Common Ragweed	HIGH	23 grains/m³
🌿 Sagebrush	HIGH	22 grains/m³
🌾 Perennial Ryegrass	MED	11 grains/m³
+35 more tracked Timothy Grass Grass (mixed) Cock's-foot Russian Thistle Stinging Nettle Pigweed Fat Hen 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
🌿 Mugwort	V.HI	31 grains/m³
🌿 Giant Ragweed	HIGH	25 grains/m³
🌿 Common Ragweed	HIGH	21 grains/m³
🌿 Sagebrush	HIGH	20 grains/m³
🌿 Stinging Nettle	MED	8 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Russian Thistle Pigweed Western Ragweed 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
🌿 Mugwort	HIGH	28 grains/m³
🌿 Giant Ragweed	HIGH	22 grains/m³
🌿 Common Ragweed	HIGH	19 grains/m³
🌿 Sagebrush	HIGH	19 grains/m³
🌿 Stinging Nettle	MED	7 grains/m³
+35 more tracked Pigweed Fat Hen Perennial Ryegrass Timothy Grass Grass (mixed) Russian Thistle Western Ragweed Cock's-foot 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: 15:30 UTC

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

Map of Harlow (51.785164°, 0.097813°)

More in United Kingdom

Aberdeen Ashford Aylesbury Banbury Barking and Dagenham Barnet

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