Name: Pollen forecast for Cambridge (2026-09-01)
Creator: Pollen Count
Published: 2026-09-01T15:30:26Z
License: https://pollencount.org/terms/

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About Pollen in Cambridge

Cambridge’s spring allergy season (March-May) is dominated by Birch pollen from ubiquitous street trees and College Gardens; Oak pollen follows, originating from established urban parks like Parker’s Piece and Jesus Green. Summer (June-August) peaks with pervasive Grass pollen from the River Cam’s meadows, Stourbridge Common, and surrounding Fenland fringes.

The city’s flat topography and dense green spaces can trap airborne pollen, locally intensifying concentrations; late autumn/winter (September-February) introduces Mould spores, exacerbated by damp conditions along the Cam’s banks and decomposing leaf litter within areas such as Cambridge University Botanic Garden.

The pollen count in Cambridge today is X.HI, driven mainly by Mugwort.

X.HI

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 X.HI

Evening

Grass MED

Tree LOW

Weed X.HI

Species	Level	Count
🌿 Mugwort	X.HI	54 grains/m³
🌿 Giant Ragweed	V.HI	38 grains/m³
🌿 Sagebrush	V.HI	38 grains/m³
🌿 Common Ragweed	V.HI	32 grains/m³
🌾 Grass (mixed)	MED	15 grains/m³
+35 more tracked Russian Thistle Cock's-foot Perennial Ryegrass Timothy Grass Stinging Nettle Pigweed Fat Hen Ribwort Plantain Western Ragweed 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	X.HI	61 grains/m³
🌿 Giant Ragweed	V.HI	42 grains/m³
🌿 Sagebrush	V.HI	42 grains/m³
🌿 Common Ragweed	V.HI	36 grains/m³
🌾 Grass (mixed)	HIGH	21 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Cock's-foot Russian Thistle Stinging Nettle Fat Hen Pigweed Ribwort Plantain Western Ragweed 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	41 grains/m³
🌿 Giant Ragweed	HIGH	28 grains/m³
🌿 Sagebrush	HIGH	28 grains/m³
🌿 Common Ragweed	HIGH	24 grains/m³
🌾 Grass (mixed)	MED	12 grains/m³
+35 more tracked Perennial Ryegrass Timothy Grass Russian Thistle Stinging Nettle Cock's-foot Fat Hen Pigweed Ribwort Plantain Western Ragweed 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	22 grains/m³
🌿 Sagebrush	HIGH	22 grains/m³
🌿 Common Ragweed	HIGH	18 grains/m³
🌾 Grass (mixed)	MED	10 grains/m³
+35 more tracked Perennial Ryegrass Cock's-foot Timothy Grass Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Western Ragweed 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	X.HI
Wed 2 Sep	LOW	HIGH	X.HI
Thu 3 Sep	LOW	MED	V.HI
Fri 4 Sep	LOW	MED	V.HI

Map of Cambridge (52.202554°, 0.135228°)

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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