Date: 2025-05-07
The Universal Pollen Index (UPI) is a globally unified system by Google’s Pollen API that quantifies pollen concentration levels for different plant types: Tree, Grass, and Weed.
| Value | Label | Description |
|---|---|---|
| 0 | None | No detectable pollen |
| 1 | Very Low | Negligible pollen exposure |
| 2 | Low | Minor levels, may affect sensitive users |
| 3 | Moderate | Noticeable to allergy sufferers |
| 4 | High | Likely to cause symptoms |
| 5 | Very High | Severe exposure risk |
Note: The 0–5 scale applies independently per allergen type (e.g., TREE, GRASS, WEED). So each plant category has its own UPI ranging from 0 to 5.
| Type | Plant Name | Code |
|---|---|---|
| Tree | Oak | OAK |
| Tree | Cypress Pine | CYPRESS_PINE |
| Grass | Grasses (general) | GRAMINALES |
| Weed | Ragweed | RAGWEED |
| Weed | Mugwort | MUGWORT |
- Heatmap tiles available per plant type
- Supports location-specific querying
- Provides UPI data globally (coverage varies)