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NOAA Weather Forecast API (via Maxwell International)
x402
NOAA Weather Forecast API (via Maxwell International) is a paid API for AI agents from api.maxwellinternational.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).
Returns official NOAA weather forecasts for a given location, including temperature, wind, and short/detailed forecast periods.
Price / call$0.005
Success—
StatusUnknown
How this service works
NWS daily/period forecast for a US point or grid; same answer as weather.forecast. From the NWS (US and territories), cached and refreshed about every 3 hours; a location not yet cached answers 404, is not charged, and is queued.
Output
Returns a structured JSON object with forecast periods (name, start/end times, daytime flag, temperature in °F and °C, wind speed and direction, short forecast, detailed forecast), plus metadata including the Weather Forecast Office (WFO), grid coordinates, state, country, cache status, source class, and generation timestamp.
Example use cases
Outdoor event weather planning
“What does the NOAA forecast look like for Boulder, Colorado this weekend? I need temperature, wind conditions, and whether it'll be clear or cloudy for an outdoor event Saturday.”
Travel itinerary weather check
“Can you pull the official NOAA weather forecast for the coordinates 39.7392° N, 104.9903° W — I'm flying into Denver tomorrow and want to know what to expect for temperature and wind.”
Smart home automation trigger
“Fetch me the current NOAA forecast for my home location near Fort Collins, Colorado so I can decide whether to run the sprinklers tonight — give me tonight's low temperature and sky conditions.”
Technical details
Endpoint
GEThttps://api.maxwellinternational.ai/v1/weather/noaa?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need official US government (NOAA) weather forecast data with per-period breakdowns including wind, temperature, and detailed text forecasts. It is particularly suited for US locations where authoritative forecast data is required, and for AI agents that need structured multi-period forecasts rather than a simple current-conditions summary. Prefer this over third-party weather APIs when regulatory, compliance, or data-quality requirements favor official government sources.
Side effects
- Location outside US coverage (NOAA only covers US territories) — may return error or empty periods
- Invalid or missing query parameters result in a 400 or schema validation error
- Payment not processed (x402 protocol) — returns 402 Payment Required before forecast is served
- NOAA upstream API outage causes stale or failed response
- Cache miss combined with NOAA rate limits may increase latency or return errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "weather.forecast",
"wfo": "BOU",
"cache": "hit",
"gridX": 63,
"gridY": 62,
"state": "Colorado",
"country": "United States",
"periods": [
{
"name": "Tonight",
"endTime": "2026-09-26T06:00:00-06:00",
"isDaytime": false,
"startTime": "2026-09-25T21:00:00-06:00",
"windSpeed": "5 to 8 mph",
"temperature": 53,
"temperatureC": 11.7,
"shortForecast": "Mostly Clear",
"windDirection": "SSW",
"temperatureUnit": "F",
"detailedForecast": "Mostly clear. Low around 53, with temperatures rising to around 55 overnight...."
}
],
"updatedAt": null,
"generatedAt": "2026-09-26T03:52:17.125Z",
"sourceClass": "official-api",
"resolvedFrom": "latlon"
}
}Tags
x402
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