Name: Pollen forecast for Rennes (2026-10-23)
Creator: Pollen Count
Published: 2026-10-23T15:52:00Z
License: https://pollencount.org/terms/

The pollen count in Rennes today is low, driven mainly by Mugwort.

LOW

14 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 LOW

Weed LOW

Afternoon

Grass LOW

Tree LOW

Weed LOW

Evening

Grass LOW

Tree LOW

Weed LOW

Species	Level	Count
🌿 Mugwort	LOW	3 grains/m³
🌾 Perennial Ryegrass	LOW	3 grains/m³
🌾 Timothy Grass	LOW	3 grains/m³
🌾 Grass (mixed)	LOW	3 grains/m³
🌾 Cock's-foot	LOW	2 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Pigweed Sagebrush Fat Hen Ribwort Plantain Common Sorrel Russian Thistle Stinging Nettle Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed 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
🌾 Cock's-foot	LOW	4 grains/m³
🌾 Perennial Ryegrass	LOW	4 grains/m³
🌾 Timothy Grass	LOW	4 grains/m³
🌾 Grass (mixed)	LOW	4 grains/m³
🌿 Mugwort	LOW	3 grains/m³
+35 more tracked Fat Hen Pellitory-of-the-wall Upright Pellitory Russian Thistle Stinging Nettle Pigweed Sagebrush Ribwort Plantain Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed 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
🌿 Mugwort	V.HI	30 grains/m³
🌿 Pellitory-of-the-wall	HIGH	18 grains/m³
🌾 Perennial Ryegrass	MED	16 grains/m³
🌿 Upright Pellitory	HIGH	16 grains/m³
🌾 Grass (mixed)	MED	16 grains/m³
+35 more tracked Cock's-foot Timothy Grass Stinging Nettle Russian Thistle Fat Hen Pigweed Ribwort Plantain Common Sorrel Sagebrush Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed 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
🌿 Mugwort	MED	14 grains/m³
🌾 Cock's-foot	MED	9 grains/m³
🌾 Perennial Ryegrass	MED	9 grains/m³
🌾 Timothy Grass	MED	9 grains/m³
🌾 Grass (mixed)	MED	9 grains/m³
+35 more tracked Pellitory-of-the-wall Upright Pellitory Russian Thistle Stinging Nettle Pigweed Fat Hen Ribwort Plantain Sagebrush Common Sorrel Box Elder Alder Common Ragweed Western Ragweed Giant Ragweed 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: 15:52 UTC

4-Day Forecast	Tree	Grass	Weed
Fri 23 Oct	LOW	LOW	LOW
Sat 24 Oct	LOW	LOW	LOW
Sun 25 Oct	LOW	MED	V.HI
Mon 26 Oct	LOW	MED	MED

Map of Rennes (48.1173°, -1.6778°)

More in France

Nantes Paris Bordeaux Lille Lyon Toulouse

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