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OpenAPI Specification

openapi: 3.1.0
info:
  title: Xweather Weather Air Quality Lightning 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: Lightning
  description: Lightning strike data and nowcasts
paths:
  /lightning/{location}:
    get:
      operationId: getLightning
      summary: Get Lightning Strike Data
      description: Returns global lightning strike data including type, location, polarity, and amperage for the last 5 minutes.
      tags:
      - Lightning
      parameters:
      - name: location
        in: path
        required: true
        schema:
          type: string
        description: Location identifier or radius query (e.g., "40.7128,-74.0060" or "closest:20:40.7128,-74.0060").
        example: 40.7128,-74.0060
      - 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: radius
        in: query
        required: false
        schema:
          type: string
        description: Radius for nearby strikes (e.g., "25mi" or "40km").
      - name: limit
        in: query
        required: false
        schema:
          type: integer
        description: Maximum number of lightning strikes to return.
      - name: fields
        in: query
        required: false
        schema:
          type: string
        description: Comma-separated list of fields to return.
      responses:
        '200':
          description: Lightning strike data
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LightningResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /lightning/threats/{location}:
    get:
      operationId: getLightningThreats
      summary: Get Lightning Threat Nowcast
      description: Returns lightning nowcasts providing potential thunderstorm activity for the next 60 minutes in 10-minute intervals.
      tags:
      - Lightning
      parameters:
      - name: location
        in: path
        required: true
        schema:
          type: string
        description: Location identifier (lat/long or place name).
        example: dallas,tx
      - 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.
      responses:
        '200':
          description: Lightning threat nowcast data
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LightningThreatsResponse'
        '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:
    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.
    LightningStrike:
      type: object
      properties:
        id:
          type: string
          description: Strike identifier.
        lat:
          type: number
          description: Latitude of the strike.
        lon:
          type: number
          description: Longitude of the strike.
        timestamp:
          type: integer
          description: Unix timestamp of the strike.
        dateTimeISO:
          type: string
          format: date-time
        type:
          type: string
          description: Strike type (e.g., CG for cloud-to-ground, IC for intra-cloud).
        polarity:
          type: string
          enum:
          - +
          - '-'
          description: Strike polarity (positive or negative).
        peakAmpKA:
          type: number
          description: Peak amplitude in kiloamperes.
        ic:
          type: boolean
          description: Whether the strike was intra-cloud.
    ApiResponse:
      type: object
      properties:
        success:
          type: boolean
          description: Whether the request was successful.
        error:
          $ref: '#/components/schemas/ApiError'
      required:
      - success
    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.
    LightningResponse:
      allOf:
      - $ref: '#/components/schemas/ApiResponse'
      - type: object
        properties:
          response:
            type: array
            items:
              type: object
              properties:
                id:
                  type: string
                loc:
                  $ref: '#/components/schemas/Location'
                ob:
                  $ref: '#/components/schemas/LightningStrike'
    LightningThreatsResponse:
      allOf:
      - $ref: '#/components/schemas/ApiResponse'
      - type: object
        properties:
          response:
            type: array
            items:
              type: object
  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.