Tomorrow.io Weather Maps API

openapi: 3.1.0
info:
  title: Tomorrow.io Weather Maps API
  version: '4.0'
  description: |
    Web Mercator (XYZ) PNG tile service for visualizing Tomorrow.io weather data
    layers — precipitation radar, temperature, wind, clouds, air quality, and more.
    Drop directly into Mapbox, MapLibre, Leaflet, OpenLayers, or Google Maps.
  contact:
    name: Tomorrow.io Support
    url: https://support.tomorrow.io
servers:
  - url: https://api.tomorrow.io/v4
    description: Tomorrow.io Production
security:
  - apikeyAuth: []
tags:
  - name: Maps
    description: Web Mercator tile service for weather layers.
paths:
  /map/tile/{zoom}/{x}/{y}/{field}/{timeFormat}:
    get:
      tags:
        - Maps
      summary: Retrieve a Weather Map Tile
      operationId: getMapTile
      description: |
        Retrieve a 256x256 PNG tile rendering the requested data layer at the given
        XYZ Web Mercator address and time. Supports past, current, and forecast
        time references via the ``timeFormat`` path parameter.
      parameters:
        - name: zoom
          in: path
          required: true
          schema:
            type: integer
            minimum: 0
            maximum: 12
        - name: x
          in: path
          required: true
          schema:
            type: integer
        - name: y
          in: path
          required: true
          schema:
            type: integer
        - name: field
          in: path
          required: true
          description: 'Data layer field (e.g. precipitationIntensity, temperature, windSpeed, cloudCover).'
          schema:
            type: string
        - name: timeFormat
          in: path
          required: true
          description: 'ISO-8601 timestamp or ''now''.'
          schema:
            type: string
        - name: apikey
          in: query
          required: true
          schema:
            type: string
      responses:
        '200':
          description: PNG tile.
          content:
            image/png:
              schema:
                type: string
                format: binary
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  securitySchemes:
    apikeyAuth:
      type: apiKey
      in: query
      name: apikey
  responses:
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    RateLimited:
      description: Rate limit exceeded.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        code:
          type: integer
        type:
          type: string
        message:
          type: string