Name: Pollen forecast for Grenoble (2026-08-31)
Creator: Pollen Count
Published: 2026-09-01T09:02:01Z
License: https://pollencount.org/terms/

The pollen count in Grenoble today is X.HI, driven mainly by Giant Ragweed.

X.HI

16 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed HIGH

Afternoon

Grass MED

Tree LOW

Weed X.HI

Evening

Grass MED

Tree LOW

Weed X.HI

Species	Level	Count
🌿 Giant Ragweed	X.HI	118 grains/m³
🌿 Mugwort	X.HI	104 grains/m³
🌿 Common Ragweed	X.HI	94 grains/m³
🌿 Western Ragweed	V.HI	44 grains/m³
🌿 Pellitory-of-the-wall	HIGH	27 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Russian Thistle Pigweed Fat Hen Ribwort Plantain Grass (mixed) Common Sorrel Cock's-foot Perennial Ryegrass Timothy Grass Box Elder Alder Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass 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
🌿 Giant Ragweed	X.HI	282 grains/m³
🌿 Mugwort	X.HI	248 grains/m³
🌿 Common Ragweed	X.HI	224 grains/m³
🌿 Western Ragweed	X.HI	104 grains/m³
🌿 Pellitory-of-the-wall	X.HI	64 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Russian Thistle Fat Hen Pigweed Ribwort Plantain Grass (mixed) Common Sorrel Perennial Ryegrass Timothy Grass Cock's-foot Box Elder Alder Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass 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
🌿 Giant Ragweed	X.HI	285 grains/m³
🌿 Mugwort	X.HI	251 grains/m³
🌿 Common Ragweed	X.HI	227 grains/m³
🌿 Western Ragweed	X.HI	105 grains/m³
🌿 Pellitory-of-the-wall	X.HI	64 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Russian Thistle Fat Hen Pigweed Ribwort Plantain Grass (mixed) Common Sorrel Perennial Ryegrass Timothy Grass Cock's-foot Box Elder Alder Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass 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
🌿 Giant Ragweed	X.HI	296 grains/m³
🌿 Mugwort	X.HI	261 grains/m³
🌿 Common Ragweed	X.HI	235 grains/m³
🌿 Western Ragweed	X.HI	109 grains/m³
🌿 Pellitory-of-the-wall	X.HI	67 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Russian Thistle Fat Hen Pigweed Ribwort Plantain Grass (mixed) Common Sorrel Perennial Ryegrass Timothy Grass Cock's-foot Box Elder Alder Sagebrush Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Bermuda Grass 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: 09:02 UTC

4-Day Forecast	Tree	Grass	Weed
Mon 31 Aug	LOW	MED	X.HI
Tue 1 Sep	LOW	HIGH	X.HI
Wed 2 Sep	LOW	HIGH	X.HI
Thu 3 Sep	LOW	HIGH	X.HI

Map of Grenoble (45.1885°, 5.7245°)

More in France

Bordeaux Lille Lyon Marseille Montpellier Nantes

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