X.HI

16 active species

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4-Day Forecast:

Morning

Grass LOW

Tree X.HI

Weed LOW

Afternoon

Grass LOW

Tree X.HI

Weed MED

Evening

Grass LOW

Tree V.HI

Weed MED

Species	Level	Count
🌳 English Oak	X.HI	388 grains/m³
🌳 Japanese Cedar	X.HI	383 grains/m³
🌳 Paper Birch	X.HI	362 grains/m³
🌳 Downy Birch	X.HI	340 grains/m³
🌳 Japanese Cypress	X.HI	334 grains/m³
+35 more tracked White Oak Silver Birch White Mulberry Holm Oak London Plane Box Elder Black Poplar Pellitory-of-the-wall Upright Pellitory Bermuda Grass Ribwort Plantain Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Fat Hen Hazel Mediterranean Cypress Cock's-foot Ash Mountain Cedar Perennial Ryegrass Olive Parthenium Weed Timothy Grass Grass (mixed) Mesquite Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	X.HI	292 grains/m³
🌳 Japanese Cedar	X.HI	288 grains/m³
🌳 Paper Birch	X.HI	272 grains/m³
🌳 Downy Birch	X.HI	256 grains/m³
🌳 Japanese Cypress	X.HI	251 grains/m³
+35 more tracked White Oak Silver Birch White Mulberry Holm Oak London Plane Box Elder Black Poplar Pellitory-of-the-wall Upright Pellitory Bermuda Grass Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Fat Hen Hazel Mediterranean Cypress Cock's-foot Ash Mountain Cedar Perennial Ryegrass Olive Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	X.HI	539 grains/m³
🌳 Japanese Cedar	X.HI	532 grains/m³
🌳 Paper Birch	X.HI	502 grains/m³
🌳 Downy Birch	X.HI	472 grains/m³
🌳 Japanese Cypress	X.HI	463 grains/m³
+35 more tracked White Oak Silver Birch White Mulberry Holm Oak London Plane Box Elder Black Poplar Pellitory-of-the-wall Upright Pellitory Bermuda Grass Ribwort Plantain Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Fat Hen Hazel Mediterranean Cypress Cock's-foot Ash Mountain Cedar Perennial Ryegrass Olive Parthenium Weed Timothy Grass Grass (mixed) Mesquite Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	X.HI	389 grains/m³
🌳 Japanese Cedar	X.HI	384 grains/m³
🌳 Paper Birch	X.HI	362 grains/m³
🌳 Downy Birch	X.HI	340 grains/m³
🌳 Japanese Cypress	X.HI	334 grains/m³
+35 more tracked White Oak Silver Birch White Mulberry Holm Oak London Plane Box Elder Black Poplar Pellitory-of-the-wall Upright Pellitory Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Fat Hen Hazel Mediterranean Cypress Bermuda Grass Cock's-foot Ash Mountain Cedar Perennial Ryegrass Olive Parthenium Weed Timothy Grass Ribwort Plantain Grass (mixed) Mesquite Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS

Last updated: 14:03 UTC

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

Map of Toronto (43.6532°, -79.3832°)

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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