# Rain Probability Window for Analysts (NWS)

> Rain Probability Window for Analysts (NWS) is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-25).

Returns the U.S. National Weather Service rain probability forecast window for a given latitude/longitude in the United States.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/pulse-weather-rain-window-analysts?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rain-probability-window-for-analysts-nws-c8ec6e7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lB9-xdRyMJrmyElBg40IU

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 rain-probability-window-for-analysts-nws-c8ec6e7c -d '<json body>'
```

Example prompt: What's the National Weather Service rain probability forecast for Washington DC right now? The coordinates are 38.9047 latitude, -77.0164 longitude.

## When to prefer this

Choose this endpoint when you need official U.S. government (NWS) rain probability data for a specific US location identified by coordinates, especially when authoritative/official forecast periods and active alerts are required rather than third-party weather estimates. Best for US-only use cases needing structured precipitation probability by forecast period.

## Known failure modes

- Non-US coordinates (outside NWS coverage area) return an error or empty response
- Invalid latitude/longitude values (out of range) cause a request failure
- NWS API upstream outage may result in stale or unavailable data
- Locations in US territories not covered by NWS point forecast grid may fail

## How this service works

Rain probability window for Analysts: Rain probability window from the U.S. National Weather Service. U.S. locations only; returns current official forecast periods or active alerts.

## Output

Returns the official NWS forecast periods for the specified U.S. location, including rain/precipitation probability percentages for each period, forecast period names (e.g. Tonight, Tuesday, Tuesday Night), and any active weather alerts relevant to the area.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "default": 38.9047
  },
  "longitude": {
   "type": "number",
   "default": -77.0164
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rain-probability-window-for-analysts-nws-c8ec6e7c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)