Name: Pollen forecast for Lyon (2026-08-31)
Creator: Pollen Count
Published: 2026-09-01T09:02:00Z
License: https://pollencount.org/terms/

The pollen count in Lyon today is V.HI, driven mainly by Giant Ragweed.

V.HI

17 active species

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4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed HIGH

Afternoon

Grass MED

Tree LOW

Weed V.HI

Evening

Grass MED

Tree LOW

Weed V.HI

Species	Level	Count
🌿 Giant Ragweed	V.HI	48 grains/m³
🌿 Common Ragweed	V.HI	39 grains/m³
🌿 Mugwort	HIGH	20 grains/m³
🌿 Western Ragweed	HIGH	18 grains/m³
🌿 Pellitory-of-the-wall	MED	12 grains/m³
+35 more tracked Upright Pellitory Russian Thistle Stinging Nettle Fat Hen Pigweed Ribwort Plantain Cock's-foot Perennial Ryegrass Timothy Grass Grass (mixed) Common Sorrel Sagebrush Box Elder Alder 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	59 grains/m³
🌿 Common Ragweed	V.HI	48 grains/m³
🌿 Mugwort	HIGH	24 grains/m³
🌿 Western Ragweed	HIGH	22 grains/m³
🌿 Pellitory-of-the-wall	HIGH	15 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Russian Thistle Fat Hen Perennial Ryegrass Timothy Grass Grass (mixed) Pigweed Cock's-foot Ribwort Plantain Common Sorrel Sagebrush Box Elder Alder 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	V.HI	38 grains/m³
🌿 Common Ragweed	V.HI	31 grains/m³
🌿 Mugwort	HIGH	16 grains/m³
🌿 Western Ragweed	MED	14 grains/m³
🌾 Perennial Ryegrass	MED	10 grains/m³
+35 more tracked Pellitory-of-the-wall Grass (mixed) Cock's-foot Upright Pellitory Timothy Grass Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Common Sorrel Sagebrush Box Elder Alder 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	65 grains/m³
🌿 Common Ragweed	X.HI	52 grains/m³
🌿 Mugwort	HIGH	27 grains/m³
🌿 Western Ragweed	HIGH	24 grains/m³
🌿 Pellitory-of-the-wall	HIGH	16 grains/m³
+35 more tracked Upright Pellitory Stinging Nettle Perennial Ryegrass Grass (mixed) Russian Thistle Fat Hen Cock's-foot Timothy Grass Pigweed Ribwort Plantain Common Sorrel Sagebrush Box Elder Alder 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	V.HI
Tue 1 Sep	LOW	MED	X.HI
Wed 2 Sep	LOW	MED	V.HI
Thu 3 Sep	LOW	MED	X.HI

Map of Lyon (45.764°, 4.8357°)

More in France

Bordeaux Grenoble Lille 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