V.HI

13 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 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	132 grains/m³
🌳 Ash	V.HI	120 grains/m³
🌳 Downy Birch	HIGH	85 grains/m³
🌳 Box Elder	HIGH	80 grains/m³
🌳 Black Poplar	HIGH	80 grains/m³
+35 more tracked Mediterranean Cypress Field Elm Paper Birch English Oak White Mulberry Alder Holm Oak White Oak Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	52 grains/m³
🌳 Ash	MED	47 grains/m³
🌳 Downy Birch	MED	33 grains/m³
🌳 Black Poplar	MED	32 grains/m³
🌳 Box Elder	MED	31 grains/m³
+35 more tracked Mediterranean Cypress Field Elm Paper Birch English Oak White Mulberry Alder White Oak Holm Oak Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	MED	44 grains/m³
🌳 Ash	MED	40 grains/m³
🌳 Downy Birch	MED	28 grains/m³
🌳 Black Poplar	MED	27 grains/m³
🌳 Box Elder	MED	26 grains/m³
+35 more tracked Mediterranean Cypress Field Elm Paper Birch English Oak White Mulberry Alder Holm Oak White Oak Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS
🌳 Silver Birch	HIGH	93 grains/m³
🌳 Ash	HIGH	84 grains/m³
🌳 Downy Birch	HIGH	60 grains/m³
🌳 Box Elder	HIGH	56 grains/m³
🌳 Black Poplar	HIGH	56 grains/m³
+35 more tracked Mediterranean Cypress Field Elm Paper Birch English Oak White Mulberry Alder Holm Oak White Oak Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Australian Pine Japanese Cypress Fat Hen Hazel Japanese Cedar Bermuda Grass Cock's-foot Mountain Cedar Perennial Ryegrass Olive Pellitory-of-the-wall Upright Pellitory Parthenium Weed Timothy Grass Ribwort Plantain London Plane Grass (mixed) Mesquite Common Sorrel Russian Thistle Stinging Nettle All species in the app: Android iOS

Last updated: 14:03 UTC

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

Map of Prague (50.0755°, 14.4378°)

More in Czech Republic

Brno

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