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HIGH
15 active species
Refreshing live forecast…
4-Day Forecast:
Morning
Grass LOW
Tree LOW
Weed LOW
Afternoon
Grass HIGH
Tree LOW
Weed MED
Evening
Grass HIGH
Tree LOW
Weed V.HI
SpeciesLevelCount
🌾 Grass (mixed)HIGH20 grains/m³
🌾 Bermuda GrassMED14 grains/m³
🌾 Cock's-footMED14 grains/m³
🌿 MugwortMED9 grains/m³
🌾 Perennial RyegrassMED9 grains/m³
+35 more tracked
Timothy Grass Sagebrush Pellitory-of-the-wall Upright Pellitory Russian Thistle 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: 14:03 UTC
4-Day ForecastTreeGrassWeed
Wed 20 MayLOWHIGHMED
Thu 21 MayLOWMEDMED
Fri 22 MayLOWMEDLOW
Sat 23 MayLOWLOWLOW

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