openapi: 3.1.0
info:
  title: Xweather Weather Air Quality Alerts API
  description: The Xweather Weather API provides real-time and historical weather data including current conditions, forecasts, severe weather alerts, lightning data, air quality, maritime weather, and more. Backed by Vaisala, Xweather delivers science-backed hyper-local weather intelligence through a RESTful interface. Authentication uses a client ID and client secret passed as query parameters or HTTP headers.
  version: 1.0.0
  contact:
    name: Xweather Support
    url: https://www.xweather.com/support
  termsOfService: https://www.xweather.com/legal/terms
servers:
- url: https://data.api.xweather.com
  description: Xweather Weather API base URL
security:
- clientAuth: []
tags:
- name: Alerts
  description: Severe weather alerts and warnings
paths:
  /alerts/{location}:
    get:
      operationId: getAlerts
      summary: Get Weather Alerts
      description: Returns active weather alerts and advisories for a specified location from the National Weather Service, Environment Canada, and MeteoAlarm.
      tags:
      - Alerts
      parameters:
      - name: location
        in: path
        required: true
        schema:
          type: string
        description: Location identifier (ZIP code, city name, lat/long, or place name).
        example: chicago,il
      - name: client_id
        in: query
        required: true
        schema:
          type: string
        description: Your Xweather API client ID.
      - name: client_secret
        in: query
        required: true
        schema:
          type: string
        description: Your Xweather API client secret.
      - name: filter
        in: query
        required: false
        schema:
          type: string
        description: Filter by alert type (e.g., tornado, flood).
      - name: limit
        in: query
        required: false
        schema:
          type: integer
        description: Maximum number of alerts to return.
      responses:
        '200':
          description: Active weather alerts
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AlertsResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    NotFound:
      description: Not found - location or resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiResponse'
    Unauthorized:
      description: Unauthorized - invalid client ID or secret
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiResponse'
    BadRequest:
      description: Bad request - invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiResponse'
  schemas:
    ApiResponse:
      type: object
      properties:
        success:
          type: boolean
          description: Whether the request was successful.
        error:
          $ref: '#/components/schemas/ApiError'
      required:
      - success
    Alert:
      type: object
      properties:
        id:
          type: string
          description: Unique alert identifier.
        type:
          type: string
          description: Alert type code.
        name:
          type: string
          description: Alert name.
        body:
          type: string
          description: Full text body of the alert.
        timestamps:
          type: object
          properties:
            issued:
              type: integer
            expires:
              type: integer
            updated:
              type: integer
        areas:
          type: array
          items:
            type: object
          description: Geographic areas affected by the alert.
    ApiError:
      type: object
      properties:
        code:
          type: string
          description: Error code string.
          example: invalid_client
        description:
          type: string
          description: Human-readable error description.
          example: Invalid client ID or secret.
    AlertsResponse:
      allOf:
      - $ref: '#/components/schemas/ApiResponse'
      - type: object
        properties:
          response:
            type: array
            items:
              type: object
              properties:
                id:
                  type: string
                loc:
                  $ref: '#/components/schemas/Location'
                alerts:
                  type: array
                  items:
                    $ref: '#/components/schemas/Alert'
    Location:
      type: object
      properties:
        id:
          type: string
          description: Location identifier.
        name:
          type: string
          description: Location name.
        state:
          type: string
          description: State or province code.
        stateFull:
          type: string
          description: Full state or province name.
        country:
          type: string
          description: Country code (ISO 3166-1 alpha-2).
        countryFull:
          type: string
          description: Full country name.
        lat:
          type: number
          format: float
          description: Latitude.
        lon:
          type: number
          format: float
          description: Longitude.
        elevM:
          type: number
          description: Elevation in meters.
        elevFT:
          type: number
          description: Elevation in feet.
        profile:
          type: object
          description: Additional location profile data.
  securitySchemes:
    clientAuth:
      type: apiKey
      in: query
      name: client_id
      description: Xweather uses client_id and client_secret query parameters for authentication. Both are required on every request.