V.HI

14 active species

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4-Day Forecast:

Morning

Grass HIGH

Tree LOW

Weed HIGH

Afternoon

Grass V.HI

Tree LOW

Weed V.HI

Evening

Grass MED

Tree LOW

Weed V.HI

Species	Level	Count
🌾 Grass (mixed)	V.HI	69 grains/m³
🌿 Mugwort	V.HI	46 grains/m³
🌾 Bermuda Grass	HIGH	34 grains/m³
🌿 Pellitory-of-the-wall	V.HI	34 grains/m³
🌾 Cock's-foot	HIGH	32 grains/m³
+35 more tracked Fat Hen Upright Pellitory Pigweed Ribwort Plantain Russian Thistle Timothy Grass Perennial Ryegrass Stinging Nettle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌾 Grass (mixed)	V.HI	68 grains/m³
🌿 Mugwort	X.HI	52 grains/m³
🌿 Pellitory-of-the-wall	V.HI	38 grains/m³
🌿 Fat Hen	V.HI	35 grains/m³
🌾 Bermuda Grass	HIGH	33 grains/m³
+35 more tracked Upright Pellitory Cock's-foot Pigweed Ribwort Plantain Russian Thistle Timothy Grass Perennial Ryegrass Stinging Nettle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌾 Grass (mixed)	X.HI	132 grains/m³
🌿 Mugwort	X.HI	67 grains/m³
🌾 Bermuda Grass	V.HI	64 grains/m³
🌾 Cock's-foot	V.HI	61 grains/m³
🌿 Pellitory-of-the-wall	X.HI	50 grains/m³
+35 more tracked Fat Hen Upright Pellitory Pigweed Ribwort Plantain Russian Thistle Timothy Grass Perennial Ryegrass Stinging Nettle Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS
🌾 Grass (mixed)	HIGH	49 grains/m³
🌿 Mugwort	V.HI	45 grains/m³
🌿 Pellitory-of-the-wall	V.HI	34 grains/m³
🌿 Fat Hen	V.HI	30 grains/m³
🌿 Upright Pellitory	HIGH	29 grains/m³
+35 more tracked Pigweed Ribwort Plantain Bermuda Grass Russian Thistle Cock's-foot Timothy Grass Stinging Nettle Perennial Ryegrass Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Parthenium Weed London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Field Elm All species in the app: Android iOS

Last updated: 14:03 UTC

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

Map of Porto (41.1579°, -8.6291°)

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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