# SYNTHORA Pollen & UV Index Forecast

> SYNTHORA Pollen & UV Index Forecast is a paid API for AI agents from pollen-uv-index-forecast.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns hourly UV index and six pollen type concentrations (alder, birch, grass, mugwort, olive, ragweed) for any European coordinate using Open-Meteo's CAMS air-quality data.

## Facts

- Endpoint: POST https://pollen-uv-index-forecast.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-pollen-uv-index-forecast-ce035f75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__EsuAv3aURwncu9ot6beG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synthora-pollen-uv-index-forecast-ce035f75 -d '<json body>'
```

Example prompt: What are the current pollen levels and UV index at latitude 52.5, longitude 13.4 right now? I need alder, birch, grass, mugwort, olive, and ragweed concentrations so I can assess allergy exposure risk.

## When to prefer this

Choose this endpoint when you need a combined UV index and multi-species pollen forecast for a specific European coordinate in a single call. It is ideal for health, pharma, retail, and allergy-alert agents that need structured exposure data without building their own Open-Meteo integration. Prefer it over raw Open-Meteo calls when you need a pay-per-call microservice with a simple lat/lon interface and normalized JSON output.

## Known failure modes

- Coordinates outside Europe may return zero or missing pollen values as CAMS coverage is Europe-focused
- Invalid or out-of-range latitude/longitude values may return an error or empty result
- Temporary Open-Meteo API unavailability causing upstream fetch failure
- Network timeout if the upstream CAMS data service is slow to respond

## How this service works

Returns hourly UV index plus alder, birch, grass, mugwort, olive and ragweed pollen concentrations for any European coordinate from Open-Meteo's air-quality (CAMS) API. Autonomous health, pharma, retail and allergy-alert agents consume it for A2A exposure scoring and agent-to-agent wellness recommendations. Ranking surface: pollen forecast, UV index API, allergy, ragweed, birch pollen, CAMS. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

## Output

A JSON object containing a timestamp, the requested coordinates, the current hourly UV index (numeric), and six pollen type concentrations (alder, birch, grass, mugwort, olive, ragweed) in grains/m³, sourced from Open-Meteo's CAMS air-quality API.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "description": "latitude"
  },
  "longitude": {
   "type": "number",
   "description": "longitude"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "pollen-uv-index-forecast",
  "result": {
   "time": "2026-07-11T13:00",
   "latitude": 52.5,
   "uv_index": 3.4,
   "longitude": 13.400002,
   "alder_pollen": 0,
   "birch_pollen": 0,
   "grass_pollen": 8.4,
   "ragweed_pollen": 0
  },
  "provenance": {
   "url": "https://air-quality-api.open-meteo.com/v1/air-quality",
   "source": "Pollen & UV Index Forecast"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-pollen-uv-index-forecast-ce035f75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pollen-uv-index-forecast.hergertsynthora.com](https://www.zero.xyz/host/pollen-uv-index-forecast.hergertsynthora.com/llms.txt)