Name: Pollen forecast for Barnet (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:24Z
License: https://pollencount.org/terms/

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About Pollen in Barnet

Barnet’s seasonal allergy profile commences early spring (March-April) with high tree pollen from prevalent Birch and Oak, concentrated in urban green spaces like Trent Park and Oak Hill Park; mid-spring (April-May) sees further tree pollen from Plane and Ash street trees; summer (May-July) transitions to peak grass pollen, primarily from extensive meadows within the Dollis Brook Valley Walk and Totteridge Valley.

Pollen levels are influenced by Barnet’s varied topography, with valleys like Dollis Brook potentially trapping airborne particles, while elevated areas near High Barnet facilitate broader dispersal; late autumn (September-November) introduces elevated mould spore counts, stemming from decaying leaf litter in wooded areas and damp conditions, notably around Hadley Wood and Trent Park.

The pollen count in Barnet 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 LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Giant Ragweed	HIGH	20 grains/m³
🌿 Common Ragweed	HIGH	16 grains/m³
🌿 Mugwort	MED	11 grains/m³
🌾 Perennial Ryegrass	MED	9 grains/m³
🌾 Grass (mixed)	MED	9 grains/m³
+35 more tracked Cock's-foot Timothy Grass Sagebrush Stinging Nettle Pigweed Fat Hen Russian Thistle 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
🌿 Giant Ragweed	HIGH	24 grains/m³
🌿 Common Ragweed	HIGH	20 grains/m³
🌿 Mugwort	MED	14 grains/m³
🌾 Grass (mixed)	MED	11 grains/m³
🌾 Cock's-foot	MED	10 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Sagebrush Russian Thistle Stinging Nettle 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
🌿 Giant Ragweed	HIGH	26 grains/m³
🌿 Common Ragweed	HIGH	22 grains/m³
🌿 Mugwort	HIGH	15 grains/m³
🌿 Sagebrush	MED	10 grains/m³
🌿 Stinging Nettle	MED	8 grains/m³
+35 more tracked Fat Hen Perennial Ryegrass Grass (mixed) Russian Thistle Pigweed Western Ragweed Cock's-foot Timothy Grass 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	17 grains/m³
🌿 Common Ragweed	MED	14 grains/m³
🌿 Mugwort	MED	10 grains/m³
🌿 Sagebrush	MED	6 grains/m³
🌿 Russian Thistle	MED	5 grains/m³
+35 more tracked Stinging Nettle Pigweed Western Ragweed Fat Hen Ribwort Plantain Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) 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	HIGH
Thu 3 Sep	LOW	MED	HIGH
Fri 4 Sep	LOW	LOW	HIGH

Map of Barnet (51.610948°, -0.260304°)

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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