Name: Pollen forecast for San Francisco (2026-10-22)
Creator: Pollen Count
Published: 2026-10-22T15:56:45Z
License: https://pollencount.org/terms/

The pollen count in San Francisco today is moderate, driven mainly by Sagebrush.

MED

15 active species

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.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 MED

Tree LOW

Weed LOW

Afternoon

Grass MED

Tree LOW

Weed MED

Evening

Grass LOW

Tree LOW

Weed LOW

Species	Level	Count
🌿 Sagebrush	MED	7 grains/m³
🌿 Mugwort	MED	7 grains/m³
🌿 Pellitory-of-the-wall	MED	7 grains/m³
🌿 Upright Pellitory	MED	6 grains/m³
🌾 Grass (mixed)	MED	6 grains/m³
+35 more tracked Russian Thistle Pigweed Fat Hen Ribwort Plantain Bermuda Grass Cock's-foot Perennial Ryegrass Timothy Grass Stinging Nettle 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 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
🌿 Pellitory-of-the-wall	HIGH	19 grains/m³
🌿 Sagebrush	HIGH	18 grains/m³
🌿 Mugwort	HIGH	18 grains/m³
🌾 Grass (mixed)	MED	16 grains/m³
🌿 Upright Pellitory	HIGH	15 grains/m³
+35 more tracked Russian Thistle Pigweed Fat Hen Ribwort Plantain Bermuda Grass Cock's-foot Perennial Ryegrass Timothy Grass Stinging Nettle 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 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
🌾 Grass (mixed)	HIGH	57 grains/m³
🌿 Pellitory-of-the-wall	X.HI	51 grains/m³
🌿 Mugwort	V.HI	49 grains/m³
🌿 Sagebrush	V.HI	48 grains/m³
🌿 Russian Thistle	V.HI	41 grains/m³
+35 more tracked Cock's-foot Upright Pellitory Bermuda Grass Fat Hen Pigweed Ribwort Plantain Perennial Ryegrass Timothy Grass Stinging Nettle 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 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
🌾 Grass (mixed)	V.HI	70 grains/m³
🌾 Bermuda Grass	HIGH	49 grains/m³
🌾 Cock's-foot	HIGH	49 grains/m³
🌿 Pellitory-of-the-wall	V.HI	33 grains/m³
🌿 Mugwort	V.HI	32 grains/m³
+35 more tracked Perennial Ryegrass Sagebrush Timothy Grass Russian Thistle Upright Pellitory Pigweed Fat Hen Ribwort Plantain Stinging Nettle 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 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: 15:56 UTC

4-Day Forecast	Tree	Grass	Weed
Thu 22 Oct	LOW	MED	MED
Fri 23 Oct	LOW	MED	HIGH
Sat 24 Oct	LOW	HIGH	X.HI
Sun 25 Oct	LOW	V.HI	V.HI

Map of San Francisco (37.7749°, -122.4194°)

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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