HIGH

9 active species

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4-Day Forecast:

Morning

Grass LOW

Tree V.HI

Weed LOW

Afternoon

Grass LOW

Tree HIGH

Weed LOW

Evening

Grass LOW

Tree MED

Weed LOW

Species	Level	Count
🌳 English Oak	HIGH	83 grains/m³
🌳 White Oak	HIGH	69 grains/m³
🌳 Holm Oak	HIGH	55 grains/m³
🌳 Paper Birch	HIGH	51 grains/m³
🌳 London Plane	MED	48 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	V.HI	131 grains/m³
🌳 White Oak	V.HI	109 grains/m³
🌳 Holm Oak	HIGH	87 grains/m³
🌳 Paper Birch	HIGH	81 grains/m³
🌳 London Plane	HIGH	76 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	HIGH	95 grains/m³
🌳 White Oak	HIGH	80 grains/m³
🌳 Holm Oak	HIGH	63 grains/m³
🌳 Paper Birch	HIGH	59 grains/m³
🌳 London Plane	HIGH	56 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌳 English Oak	HIGH	78 grains/m³
🌳 White Oak	HIGH	65 grains/m³
🌳 Holm Oak	HIGH	52 grains/m³
🌳 Paper Birch	MED	48 grains/m³
🌳 London Plane	MED	45 grains/m³
+35 more tracked Downy Birch Silver Birch Ribwort Plantain Perennial Ryegrass Common Sorrel Box Elder 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 Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Grass (mixed) Black Poplar Mesquite 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	HIGH	LOW	LOW
Thu 21 May	V.HI	LOW	LOW
Fri 22 May	HIGH	LOW	LOW
Sat 23 May	HIGH	LOW	LOW

Map of Brussels (50.8503°, 4.3517°)

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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