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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.

V.HI

11 active species

Refreshing live forecast…

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4-Day Forecast:

Morning

Grass LOW

Tree X.HI

Weed LOW

Afternoon

Grass LOW

Tree V.HI

Weed LOW

Evening

Grass LOW

Tree MED

Weed LOW

Species	Level	Count
🌳 Silver Birch	V.HI	134 grains/m³
🌳 Downy Birch	V.HI	108 grains/m³
🌳 Paper Birch	HIGH	85 grains/m³
🌳 English Oak	HIGH	68 grains/m³
🌳 Black Poplar	MED	35 grains/m³
+35 more tracked Box Elder Ash Holm Oak London Plane White Oak Field Elm Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	X.HI	290 grains/m³
🌳 Downy Birch	X.HI	233 grains/m³
🌳 Paper Birch	V.HI	184 grains/m³
🌳 English Oak	V.HI	147 grains/m³
🌳 Black Poplar	HIGH	75 grains/m³
+35 more tracked Box Elder Holm Oak Ash London Plane White Oak Field Elm Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	142 grains/m³
🌳 Downy Birch	V.HI	114 grains/m³
🌳 Paper Birch	HIGH	90 grains/m³
🌳 English Oak	HIGH	72 grains/m³
🌳 Black Poplar	MED	37 grains/m³
+35 more tracked Box Elder Ash Holm Oak London Plane White Oak Field Elm Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	V.HI	128 grains/m³
🌳 Downy Birch	V.HI	103 grains/m³
🌳 Paper Birch	HIGH	81 grains/m³
🌳 English Oak	HIGH	65 grains/m³
🌳 Box Elder	MED	33 grains/m³
+35 more tracked Black Poplar Ash Holm Oak London Plane White Oak Field Elm Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS

Last updated: 14:02 UTC

4-Day Forecast	Tree	Grass	Weed
Wed 20 May	V.HI	LOW	LOW
Thu 21 May	X.HI	LOW	LOW
Fri 22 May	V.HI	LOW	LOW
Sat 23 May	V.HI	LOW	LOW

Map of Cambridge (52.202554°, 0.135228°)

More in United Kingdom

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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