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National Weather Service

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National Weather Service (NWS) API - weather forecasts, alerts, and station observations. US coverage only. Provides detailed forecasts, severe weather alerts, and real-time conditions. CRITICAL USAGE RULES: 1. No authentication required (User-Agent header added automatically) 2. US coverage only - will fail for non-US coordinates 3. Use getPointForecast() for 7-day forecasts at a location 4. Use getActiveAlerts() for severe weather warnings

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Provenance

PublisherNational Weather Service

Freshness & coverage

FreshnessFreshness not declared
GeographicNot declared
TemporalNot declared
AuthenticationNo credentials required

Methods (5)

  • getPointForecast

    read

    Get the NWS seven-day forecast for a US coordinate.

    Required paramslatitudelongitude
    Input schema
    {
  "type": "object",
  "properties": {
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    }
  },
  "required": [
    "latitude",
    "longitude"
  ],
  "additionalProperties": true
}

  • getPointHourlyForecast

    read

    Get the NWS hourly forecast for a US coordinate.

    Required paramslatitudelongitude
    Input schema
    {
  "type": "object",
  "properties": {
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    }
  },
  "required": [
    "latitude",
    "longitude"
  ],
  "additionalProperties": true
}

  • getActiveAlerts

    read

    Get active NWS alerts by two-letter state code or coordinate pair.

    Required paramsstate or latitudestate or longitude
    Input schema
    {
  "type": "object",
  "properties": {
    "state": {
      "type": "string",
      "description": "Two-letter state code, e.g. TX."
    },
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    }
  },
  "additionalProperties": true
}

  • getStationObservations

    read

    Get the latest observation for an NWS station.

    Required paramsstationId
    Input schema
    {
  "type": "object",
  "properties": {
    "stationId": {
      "type": "string",
      "description": "Station ID such as KDEN."
    }
  },
  "required": [
    "stationId"
  ],
  "additionalProperties": true
}

  • findNearestStations

    read

    Find NWS stations near a US coordinate.

    Required paramslatitudelongitude
    Input schema
    {
  "type": "object",
  "properties": {
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    }
  },
  "required": [
    "latitude",
    "longitude"
  ],
  "additionalProperties": true
}