openapi: 3.0.3
info:
  title: EPA Air Quality System (AQS) Account Type Codes Quarterly Data API
  description: 'The Air Quality System (AQS) Data Mart API provides programmatic access to ambient air

    sample data collected by state, local, tribal and federal air pollution control agencies

    from thousands of monitors across the United States. The API exposes monitor metadata,

    raw sample observations, daily/quarterly/annual aggregates, and quality assurance results.

    '
  version: '1.0'
  contact:
    name: AQS Data Mart Support
    email: aqsdatamart@epa.gov
    url: https://aqs.epa.gov/aqsweb/documents/data_api.html
  license:
    name: U.S. Government Work / Public Domain
    url: https://www.usa.gov/government-works
servers:
- url: https://aqs.epa.gov/data/api
  description: Production AQS Data Mart API
security:
- emailKey: []
tags:
- name: Quarterly Data
  description: Quarterly aggregated values.
paths:
  /quarterlyData/bySite:
    get:
      tags:
      - Quarterly Data
      summary: Get Quarterly Data by Site
      operationId: quarterlyDataBySite
      parameters:
      - $ref: '#/components/parameters/Email'
      - $ref: '#/components/parameters/Key'
      - $ref: '#/components/parameters/Param'
      - $ref: '#/components/parameters/Bdate'
      - $ref: '#/components/parameters/Edate'
      - $ref: '#/components/parameters/State'
      - $ref: '#/components/parameters/County'
      - $ref: '#/components/parameters/Site'
      - $ref: '#/components/parameters/Cbdate'
      - $ref: '#/components/parameters/Cedate'
      responses:
        '200':
          description: Quarterly values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                quarterlyDataBySite200Example:
                  summary: Default quarterlyDataBySite 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /quarterlyData/byCounty:
    get:
      tags:
      - Quarterly Data
      summary: Get Quarterly Data by County
      operationId: quarterlyDataByCounty
      parameters:
      - $ref: '#/components/parameters/Email'
      - $ref: '#/components/parameters/Key'
      - $ref: '#/components/parameters/Param'
      - $ref: '#/components/parameters/Bdate'
      - $ref: '#/components/parameters/Edate'
      - $ref: '#/components/parameters/State'
      - $ref: '#/components/parameters/County'
      - $ref: '#/components/parameters/Cbdate'
      - $ref: '#/components/parameters/Cedate'
      responses:
        '200':
          description: Quarterly values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                quarterlyDataByCounty200Example:
                  summary: Default quarterlyDataByCounty 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /quarterlyData/byState:
    get:
      tags:
      - Quarterly Data
      summary: Get Quarterly Data by State
      operationId: quarterlyDataByState
      parameters:
      - $ref: '#/components/parameters/Email'
      - $ref: '#/components/parameters/Key'
      - $ref: '#/components/parameters/Param'
      - $ref: '#/components/parameters/Bdate'
      - $ref: '#/components/parameters/Edate'
      - $ref: '#/components/parameters/State'
      - $ref: '#/components/parameters/Cbdate'
      - $ref: '#/components/parameters/Cedate'
      responses:
        '200':
          description: Quarterly values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                quarterlyDataByState200Example:
                  summary: Default quarterlyDataByState 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /quarterlyData/byBox:
    get:
      tags:
      - Quarterly Data
      summary: Get Quarterly Data by Bounding Box
      operationId: quarterlyDataByBox
      parameters:
      - $ref: '#/components/parameters/Email'
      - $ref: '#/components/parameters/Key'
      - $ref: '#/components/parameters/Param'
      - $ref: '#/components/parameters/Bdate'
      - $ref: '#/components/parameters/Edate'
      - $ref: '#/components/parameters/MinLat'
      - $ref: '#/components/parameters/MaxLat'
      - $ref: '#/components/parameters/MinLon'
      - $ref: '#/components/parameters/MaxLon'
      - $ref: '#/components/parameters/Cbdate'
      - $ref: '#/components/parameters/Cedate'
      responses:
        '200':
          description: Quarterly values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                quarterlyDataByBox200Example:
                  summary: Default quarterlyDataByBox 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /quarterlyData/byCBSA:
    get:
      tags:
      - Quarterly Data
      summary: Get Quarterly Data by CBSA
      operationId: quarterlyDataByCBSA
      parameters:
      - $ref: '#/components/parameters/Email'
      - $ref: '#/components/parameters/Key'
      - $ref: '#/components/parameters/Param'
      - $ref: '#/components/parameters/Bdate'
      - $ref: '#/components/parameters/Edate'
      - $ref: '#/components/parameters/Cbsa'
      - $ref: '#/components/parameters/Cbdate'
      - $ref: '#/components/parameters/Cedate'
      responses:
        '200':
          description: Quarterly values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                quarterlyDataByCBSA200Example:
                  summary: Default quarterlyDataByCBSA 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    State:
      name: state
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{2}$
      description: 2-digit state FIPS code.
    MinLat:
      name: minlat
      in: query
      required: true
      schema:
        type: number
        format: float
      description: Minimum latitude of bounding box.
    MaxLon:
      name: maxlon
      in: query
      required: true
      schema:
        type: number
        format: float
    Bdate:
      name: bdate
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{8}$
      description: Begin date (YYYYMMDD).
    Cbdate:
      name: cbdate
      in: query
      required: false
      schema:
        type: string
        pattern: ^\d{8}$
      description: Optional change begin date (returns records updated since cbdate).
    County:
      name: county
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{3}$
      description: 3-digit county code.
    MaxLat:
      name: maxlat
      in: query
      required: true
      schema:
        type: number
        format: float
    MinLon:
      name: minlon
      in: query
      required: true
      schema:
        type: number
        format: float
    Email:
      name: email
      in: query
      required: true
      schema:
        type: string
        format: email
      description: Registered email address.
    Key:
      name: key
      in: query
      required: true
      schema:
        type: string
      description: Account-specific access key.
    Param:
      name: param
      in: query
      required: true
      schema:
        type: string
      description: Comma-separated list of up to 5 AQS 5-digit parameter codes.
    Site:
      name: site
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{4}$
      description: 4-digit site code.
    Cedate:
      name: cedate
      in: query
      required: false
      schema:
        type: string
        pattern: ^\d{8}$
      description: Optional change end date.
    Cbsa:
      name: cbsa
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{5}$
      description: 5-digit Core Based Statistical Area code.
    Edate:
      name: edate
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{8}$
      description: End date (YYYYMMDD). Must be in the same year as bdate for most services.
  schemas:
    Header:
      type: object
      properties:
        status:
          type: string
          example: active
        request_time:
          type: string
          example: string
        url:
          type: string
          example: https://example.com
        rows:
          type: integer
          example: 100
        error:
          type: array
          items:
            type: string
          example:
          - string
    Envelope:
      type: object
      required:
      - Header
      - Data
      properties:
        Header:
          type: array
          items:
            $ref: '#/components/schemas/Header'
          example:
          - string
        Data:
          type: array
          items:
            type: object
          example:
          - {}
  securitySchemes:
    emailKey:
      type: apiKey
      in: query
      name: key
      description: 'AQS requires `email` and `key` query parameters on every request. Register at

        `/signup?email=YOUR_EMAIL` to receive a key by email.

        '