openapi: 3.0.3
info:
  title: EPA Air Quality System (AQS) Account Type Codes Transactions 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: Transactions
  description: Raw transaction-format exports.
paths:
  /transactionsSample/bySite:
    get:
      tags:
      - Transactions
      summary: Transactions Sample by Site
      operationId: txSampleBySite
      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: Transactions
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                txSampleBySite200Example:
                  summary: Default txSampleBySite 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /transactionsSample/byState:
    get:
      tags:
      - Transactions
      summary: Transactions Sample by State
      operationId: txSampleByState
      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: Transactions
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                txSampleByState200Example:
                  summary: Default txSampleByState 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /transactionsQaAnnualPerformanceEvaluations/byState:
    get:
      tags:
      - Transactions
      summary: Transactions QA Annual by State
      operationId: txQaAnnualByState
      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'
      responses:
        '200':
          description: Transactions
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
              examples:
                txQaAnnualByState200Example:
                  summary: Default txQaAnnualByState 200 response
                  x-microcks-default: true
                  value:
                    status: ok
                    message: Example response
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    State:
      name: state
      in: query
      required: true
      schema:
        type: string
        pattern: ^\d{2}$
      description: 2-digit state FIPS code.
    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.
    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.
    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.

        '