HIGH

15 active species

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4-Day Forecast:

Morning

Grass LOW

Tree LOW

Weed LOW

Afternoon

Grass HIGH

Tree LOW

Weed MED

Evening

Grass MED

Tree LOW

Weed MED

Species	Level	Count
🌾 Grass (mixed)	HIGH	23 grains/m³
🌾 Bermuda Grass	MED	16 grains/m³
🌾 Cock's-foot	MED	13 grains/m³
🌿 Sagebrush	MED	11 grains/m³
🌿 Mugwort	MED	8 grains/m³
+35 more tracked Pellitory-of-the-wall Timothy Grass Russian Thistle Pigweed Fat Hen Perennial Ryegrass Upright Pellitory 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
🌾 Grass (mixed)	MED	16 grains/m³
🌾 Bermuda Grass	MED	11 grains/m³
🌿 Sagebrush	MED	10 grains/m³
🌾 Cock's-foot	MED	9 grains/m³
🌿 Mugwort	MED	8 grains/m³
+35 more tracked Pellitory-of-the-wall Russian Thistle Pigweed Fat Hen Perennial Ryegrass Upright Pellitory Timothy Grass Ribwort Plantain Common Sorrel 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 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)	MED	12 grains/m³
🌿 Sagebrush	MED	9 grains/m³
🌾 Bermuda Grass	MED	9 grains/m³
🌿 Mugwort	MED	7 grains/m³
🌾 Cock's-foot	MED	7 grains/m³
+35 more tracked Pellitory-of-the-wall Russian Thistle Pigweed Fat Hen Upright Pellitory Ribwort Plantain Perennial Ryegrass Timothy Grass Common Sorrel 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 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)	MED	10 grains/m³
🌾 Bermuda Grass	MED	7 grains/m³
🌿 Sagebrush	MED	6 grains/m³
🌾 Cock's-foot	MED	5 grains/m³
🌿 Mugwort	LOW	4 grains/m³
+35 more tracked Pellitory-of-the-wall Pigweed Fat Hen Russian Thistle Perennial Ryegrass Upright Pellitory Timothy Grass Ribwort Plantain Common Sorrel 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 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: 14:03 UTC

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

Map of San Jose (37.3382°, -121.8863°)

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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