Rainbow.AI Nowcast API

openapi: 3.0.3
info:
  title: Rainbow.AI Nowcast API
  description: The Rainbow.AI Nowcast API delivers hyperlocal precipitation forecasts with minute-by-minute predictions for the next 4 hours at 1 km spatial resolution. It returns precipitation type and intensity for any global coordinate, updated every 10 minutes. Authentication is via API key in header or query parameter.
  version: '1.0'
  termsOfService: https://developer.rainbow.ai/terms-of-service
  contact:
    url: https://developer.rainbow.ai/
  x-tags:
  - Weather
  - Nowcast
  - Precipitation
  - Forecasting
servers:
- url: https://api.rainbow.ai/v1
  description: Rainbow.AI Production API
security:
- ApiKeyHeader: []
- ApiKeyQuery: []
tags:
- name: Nowcast
  description: Minute-by-minute precipitation forecasting operations
paths:
  /weather/nowcast:
    get:
      operationId: getNowcast
      summary: Get Precipitation Nowcast
      description: Returns minute-by-minute precipitation forecast for the next 4 hours at a given latitude and longitude, at 1 km spatial resolution. Data is updated every 10 minutes.
      tags:
      - Nowcast
      parameters:
      - name: lat
        in: query
        required: true
        description: Latitude of the location (-90 to 90)
        schema:
          type: number
          format: float
          minimum: -90
          maximum: 90
          example: 40.7128
      - name: lon
        in: query
        required: true
        description: Longitude of the location (-180 to 180)
        schema:
          type: number
          format: float
          minimum: -180
          maximum: 180
          example: -74.006
      - name: timezone
        in: query
        required: false
        description: IANA timezone identifier for timestamp formatting (e.g., America/New_York)
        schema:
          type: string
          example: America/New_York
      responses:
        '200':
          description: Successful nowcast forecast response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NowcastResponse'
        '401':
          description: Unauthorized - missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '422':
          description: Unprocessable Entity - invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: Too Many Requests - rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    Location:
      type: object
      description: Geographic location coordinates
      properties:
        lat:
          type: number
          format: float
          description: Latitude (-90 to 90)
        lon:
          type: number
          format: float
          description: Longitude (-180 to 180)
    ForecastPoint:
      type: object
      description: A single minute-by-minute precipitation forecast data point
      properties:
        timestamp:
          type: string
          format: date-time
          description: ISO 8601 timestamp for this forecast minute
        precipitation_type:
          type: string
          description: Type of precipitation
          enum:
          - none
          - rain
          - snow
          - sleet
          - freezing_rain
        precipitation_intensity:
          type: number
          format: float
          description: Precipitation intensity in mm/hour
        probability:
          type: number
          format: float
          description: Probability of precipitation (0.0 to 1.0)
          minimum: 0
          maximum: 1
    NowcastResponse:
      type: object
      description: Minute-by-minute precipitation forecast for the next 4 hours
      properties:
        location:
          $ref: '#/components/schemas/Location'
        forecasts:
          type: array
          description: Array of minute-by-minute precipitation forecasts
          items:
            $ref: '#/components/schemas/ForecastPoint'
        updated_at:
          type: string
          format: date-time
          description: Timestamp of the last data update
    ErrorResponse:
      type: object
      description: Error response object
      properties:
        error:
          type: string
          description: Error type identifier
        message:
          type: string
          description: Human-readable error message
        status:
          type: integer
          description: HTTP status code
  securitySchemes:
    ApiKeyHeader:
      type: apiKey
      in: header
      name: Ocp-Apim-Subscription-Key
      description: API key passed in the Ocp-Apim-Subscription-Key header
    ApiKeyQuery:
      type: apiKey
      in: query
      name: token
      description: API key passed as a token query parameter