NWS Station Observation (Latest Measured Weather at a U.S. Weather Station)

nws/station-observation

The most recent weather actually measured at one National Weather Service observation station, such as an airport: temperature, dewpoint, wind speed, direction and gusts, barometric pressure, visibility, relative humidity, cloud layers and a short text description, with the time of the reading. This is observed weather, not a forecast. Values are in metric units and any quantity the station does not report is null. US only: the station id is a four-letter airport code such as KDCA, and an id NWS does not know returns an error. National Weather Service data as served by Omnial, not an official NWS product.

activeper callv1

Price

$0.00273 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

National Weather Service

Data from the U.S. National Weather Service (NOAA), public domain per weather.gov/disclaimer. Served by Omnial; not an official NWS product and not endorsed by NOAA or NWS.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "nws/station-observation" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "nws/station-observation" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "nws/station-observation", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "nws/station-observation", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

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Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.00273

Updated: Oct 18, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "station_id"
  ],
  "properties": {
    "station_id": {
      "type": "string",
      "pattern": "^[A-Z0-9]{3,5}$",
      "description": "NWS station identifier in capitals: a four-letter airport code such as KDCA (Washington Reagan National) or KJFK, or a five-character network station such as 0007W."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "stationId",
    "timestamp"
  ],
  "properties": {
    "station": {
      "type": "string",
      "description": "URL of the station record at NWS."
    },
    "dewpoint": {
      "type": "object",
      "description": "Dewpoint; degrees Celsius."
    },
    "windGust": {
      "type": "object",
      "description": "Wind gust; kilometres per hour; null if none."
    },
    "elevation": {
      "type": "object",
      "description": "Station elevation as a value with a unitCode."
    },
    "heatIndex": {
      "type": "object",
      "description": "Heat index; degrees Celsius; null if not applicable."
    },
    "stationId": {
      "type": "string",
      "description": "The station identifier, as requested."
    },
    "timestamp": {
      "type": "string",
      "description": "When the observation was taken, ISO 8601 in UTC."
    },
    "windChill": {
      "type": "object",
      "description": "Wind chill; degrees Celsius; null if not applicable."
    },
    "windSpeed": {
      "type": "object",
      "description": "Wind speed; kilometres per hour."
    },
    "visibility": {
      "type": "object",
      "description": "Visibility; metres."
    },
    "cloudLayers": {
      "type": "array",
      "description": "Cloud layers, each with a base height and an amount code such as CLR or BKN."
    },
    "stationName": {
      "type": "string",
      "description": "Name of the station, such as an airport."
    },
    "temperature": {
      "type": "object",
      "description": "Air temperature as {unitCode, value, qualityControl}; degrees Celsius."
    },
    "windDirection": {
      "type": "object",
      "description": "Wind direction; degrees from north."
    },
    "presentWeather": {
      "type": "array",
      "description": "Coded present-weather phenomena (rain, fog, ...); empty when none."
    },
    "textDescription": {
      "type": "string",
      "description": "Short conditions summary such as Clear; empty on some network stations."
    },
    "relativeHumidity": {
      "type": "object",
      "description": "Relative humidity; percent."
    },
    "seaLevelPressure": {
      "type": "object",
      "description": "Sea-level pressure; pascals."
    },
    "barometricPressure": {
      "type": "object",
      "description": "Station pressure; pascals."
    },
    "precipitationLast3Hours": {
      "type": "object",
      "description": "Precipitation; millimetres."
    }
  },
  "description": "The latest observation at the station.",
  "additionalProperties": true
}