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Maxwell International Weather Observation API
x402
Maxwell International Weather Observation API 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 current weather observation data for a given weather station, including temperature, dew point, wind speed, wind direction, and barometric pressure.
Price / call$0.005
Success—
StatusUnknown
How this service works
Most recent NWS station observation (by stationId, or the station nearest a lat/lon): temperature, dewpoint, wind, humidity, pressure, conditions, with observedAt showing when it was measured. 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 JSON object with the observation SKU, station ID, station name, country, observed-at timestamp, temperature in Celsius and Fahrenheit, dew point in Celsius, wind speed in km/h, wind direction in degrees, and barometric pressure in Pascals. Some fields (state, barometricPressurePa) may be null.
Example use cases
Real-time airport weather briefing
“Pull the latest weather observation for KDEN — I need the current temperature, wind speed, wind direction, and dew point before this flight departs.”
Remote site environmental monitoring
“Check the current barometric pressure and temperature at the Denver International Airport weather station and log the observation timestamp for me.”
Travel packing decision
“What's the temperature and wind speed right now at Denver International Airport? I want to know if I need a heavy jacket when I land.”
Technical details
Endpoint
GEThttps://api.maxwellinternational.ai/v1/weather/observation?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time point-in-time weather observations from a specific named weather station (e.g. ICAO airport codes like KDEN), and you want structured numeric data including temperature, dew point, wind, and pressure rather than a forecast. Prefer this over forecast APIs when you need current actual conditions rather than predictions, and over general weather services when you want raw station-level observational data.
Side effects
- Invalid or unknown station ID returns an error or empty observation
- Station data unavailable returns null fields for pressure or state
- Malformed query parameters may result in a 400 bad request
- Payment not included or insufficient triggers a 402 Payment Required response
- Network or upstream data source outage may return stale or missing data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "weather.observation",
"state": null,
"tempC": 14,
"tempF": 57.2,
"country": "United States",
"dewpointC": 11,
"stationId": "KDEN",
"observedAt": "2026-09-26T03:40:00+00:00",
"stationName": "Denver, Denver International Airport",
"windSpeedKmh": 11.124,
"windDirection": 190,
"barometricPressurePa": null
}
}Tags
x402
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