OpenAQ

OpenAQ is a non-profit organization that focuses on collecting and sharing air quality data from around the world. By providing access to this information through their open-source platform, OpenAQ aims to empower individuals, communities, and organizations to take action towards improving air quality and public health.

OpenAQ publishes 23 API contracts indexed on the APIs.io network, including Averages API, Cities API, Countries API, and 20 more. Tagged areas include Data and Data Quality.

The OpenAQ catalog on APIs.io includes 1 Spectral governance ruleset.

OpenAQ’s developer surface includes authentication, developer portal, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.2/100 thin ▬ flat Agent 28/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve

1 published contract

Data Data Quality

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Data & Reference Information Services

AE-230

Cities

GET /v2/cities

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 29.2/100 · thin

Contract Quality 9.6 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 1.1 / 17

Operational Transparency 2.4 / 11

Contract Governance 1.4 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Contract Quality scores 45.0 — up to +13.8 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/openaq/apis.yml: open an issue on github.com/api-evangelist/openaq to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Official R Client Packages on CRAN	long-tail	12.1 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 23

Individual APIs this provider publishes, each with its own machine-readable definition.

OpenAQ Averages API

The Averages API from OpenAQ — 1 operation(s) for averages.

OpenAQ Cities API

The Cities API from OpenAQ — 2 operation(s) for cities.

OpenAQ Countries API

The Countries API from OpenAQ — 6 operation(s) for countries.

OpenAQ Daily API

The Daily API from OpenAQ — 2 operation(s) for daily.

OpenAQ Days API

The Days API from OpenAQ — 5 operation(s) for days.

OpenAQ Flags API

The Flags API from OpenAQ — 2 operation(s) for flags.

OpenAQ Hourly API

The Hourly API from OpenAQ — 1 operation(s) for hourly.

OpenAQ Hours API

The Hours API from OpenAQ — 7 operation(s) for hours.

OpenAQ Instruments API

The Instruments API from OpenAQ — 3 operation(s) for instruments.

OpenAQ Latest API

The Latest API from OpenAQ — 6 operation(s) for latest.

OpenAQ Licenses API

The Licenses API from OpenAQ — 2 operation(s) for licenses.

OpenAQ Locations API

The Locations API from OpenAQ — 11 operation(s) for locations.

OpenAQ Manufacturers API

The Manufacturers API from OpenAQ — 3 operation(s) for manufacturers.

OpenAQ Measurements API

The Measurements API from OpenAQ — 5 operation(s) for measurements.

OpenAQ Owners API

The Owners API from OpenAQ — 2 operation(s) for owners.

OpenAQ Parameters API

The Parameters API from OpenAQ — 5 operation(s) for parameters.

OpenAQ Project API

The Project API from OpenAQ — 1 operation(s) for project.

OpenAQ Projects API

The Projects API from OpenAQ — 2 operation(s) for projects.

OpenAQ Providers API

The Providers API from OpenAQ — 2 operation(s) for providers.

OpenAQ Readme API

The Readme API from OpenAQ — 1 operation(s) for readme.

OpenAQ Sensors API

The Sensors API from OpenAQ — 19 operation(s) for sensors.

OpenAQ Sources API

The Sources API from OpenAQ — 3 operation(s) for sources.

OpenAQ Summary API

The Summary API from OpenAQ — 1 operation(s) for summary.

Scroll for all 23

Open Collections 29

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

OpenAQ Averages API

OPEN COLLECTION

OpenAQ Averages Cities API

OPEN COLLECTION

OpenAQ Averages Countries API

OPEN COLLECTION

OpenAQ Averages Daily API

OPEN COLLECTION

OpenAQ Averages Days API

OPEN COLLECTION

OpenAQ Averages Flags API

OPEN COLLECTION

OpenAQ Averages Hourly API

OPEN COLLECTION

OpenAQ Averages Hours API

OPEN COLLECTION

OpenAQ Averages Instruments API

OPEN COLLECTION

OpenAQ Averages Latest API

OPEN COLLECTION

OpenAQ Averages Licenses API

OPEN COLLECTION

OpenAQ Averages Locations API

OPEN COLLECTION

OpenAQ Averages Manufacturers API

OPEN COLLECTION

OpenAQ Averages Measurements API

OPEN COLLECTION

OpenAQ Averages Monthly API

OPEN COLLECTION

OpenAQ Averages Owners API

OPEN COLLECTION

OpenAQ Averages Parameters API

OPEN COLLECTION

OpenAQ Averages Project API

OPEN COLLECTION

OpenAQ Averages Projects API

OPEN COLLECTION

OpenAQ Averages Providers API

OPEN COLLECTION

OpenAQ Averages Readme API

OPEN COLLECTION

OpenAQ Averages Sensor API

OPEN COLLECTION

OpenAQ Averages Sensors API

OPEN COLLECTION

OpenAQ Averages Slug API

OPEN COLLECTION

OpenAQ Averages Sources API

OPEN COLLECTION

OpenAQ Averages Summary API

OPEN COLLECTION

OpenAQ Averages Yearly API

OPEN COLLECTION

OpenAQ Averages Years API

OPEN COLLECTION

OpenAQ

OPEN COLLECTION

Scroll for all 29

OpenAQ API pricing

Not yet checked against OpenAQ's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against OpenAQ's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

OpenAQ Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

OpenAQ Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

OpenAQ Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

OpenAQ API Rules

52 rules · 41 error-severity 7 warn-severity 4 info-severity

SPECTRAL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

OpenAQ Authentication

apiKey · 1 scheme

SECURITY

OpenAQ Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

OpenAQ Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

OpenAQ Agentic Access

64 operations

64 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

LinkedIn

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: openaq
url: https://raw.githubusercontent.com/api-evangelist/openaq/refs/heads/main/apis.yml
apis:
- aid: openaq:openaq-averages-api
  name: OpenAQ Averages API
  description: The Averages API from OpenAQ — 1 operation(s) for averages.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Averages
  properties:
  - type: OpenAPI
    url: openapi/openaq-averages-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-cities-api
  name: OpenAQ Cities API
  description: The Cities API from OpenAQ — 2 operation(s) for cities.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Cities
  properties:
  - type: OpenAPI
    url: openapi/openaq-cities-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-countries-api
  name: OpenAQ Countries API
  description: The Countries API from OpenAQ — 6 operation(s) for countries.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Countries
  properties:
  - type: OpenAPI
    url: openapi/openaq-countries-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-daily-api
  name: OpenAQ Daily API
  description: The Daily API from OpenAQ — 2 operation(s) for daily.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Daily
  properties:
  - type: OpenAPI
    url: openapi/openaq-daily-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-days-api
  name: OpenAQ Days API
  description: The Days API from OpenAQ — 5 operation(s) for days.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Days
  properties:
  - type: OpenAPI
    url: openapi/openaq-days-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-flags-api
  name: OpenAQ Flags API
  description: The Flags API from OpenAQ — 2 operation(s) for flags.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Flags
  properties:
  - type: OpenAPI
    url: openapi/openaq-flags-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-hourly-api
  name: OpenAQ Hourly API
  description: The Hourly API from OpenAQ — 1 operation(s) for hourly.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Hourly
  properties:
  - type: OpenAPI
    url: openapi/openaq-hourly-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-hours-api
  name: OpenAQ Hours API
  description: The Hours API from OpenAQ — 7 operation(s) for hours.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Hours
  properties:
  - type: OpenAPI
    url: openapi/openaq-hours-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-instruments-api
  name: OpenAQ Instruments API
  description: The Instruments API from OpenAQ — 3 operation(s) for instruments.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Instruments
  properties:
  - type: OpenAPI
    url: openapi/openaq-instruments-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-latest-api
  name: OpenAQ Latest API
  description: The Latest API from OpenAQ — 6 operation(s) for latest.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Latest
  properties:
  - type: OpenAPI
    url: openapi/openaq-latest-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-licenses-api
  name: OpenAQ Licenses API
  description: The Licenses API from OpenAQ — 2 operation(s) for licenses.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Licenses
  properties:
  - type: OpenAPI
    url: openapi/openaq-licenses-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-locations-api
  name: OpenAQ Locations API
  description: The Locations API from OpenAQ — 11 operation(s) for locations.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Location
  tags_raw:
  - Locations
  properties:
  - type: OpenAPI
    url: openapi/openaq-locations-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-manufacturers-api
  name: OpenAQ Manufacturers API
  description: The Manufacturers API from OpenAQ — 3 operation(s) for manufacturers.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Manufacturer
  tags_raw:
  - Manufacturers
  properties:
  - type: OpenAPI
    url: openapi/openaq-manufacturers-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-measurements-api
  name: OpenAQ Measurements API
  description: The Measurements API from OpenAQ — 5 operation(s) for measurements.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Measurements
  properties:
  - type: OpenAPI
    url: openapi/openaq-measurements-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-owners-api
  name: OpenAQ Owners API
  description: The Owners API from OpenAQ — 2 operation(s) for owners.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Owners
  properties:
  - type: OpenAPI
    url: openapi/openaq-owners-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-parameters-api
  name: OpenAQ Parameters API
  description: The Parameters API from OpenAQ — 5 operation(s) for parameters.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Parameters
  properties:
  - type: OpenAPI
    url: openapi/openaq-parameters-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-project-api
  name: OpenAQ Project API
  description: The Project API from OpenAQ — 1 operation(s) for project.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Project
  properties:
  - type: OpenAPI
    url: openapi/openaq-project-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-projects-api
  name: OpenAQ Projects API
  description: The Projects API from OpenAQ — 2 operation(s) for projects.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/openaq-projects-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-providers-api
  name: OpenAQ Providers API
  description: The Providers API from OpenAQ — 2 operation(s) for providers.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Providers
  properties:
  - type: OpenAPI
    url: openapi/openaq-providers-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-readme-api
  name: OpenAQ Readme API
  description: The Readme API from OpenAQ — 1 operation(s) for readme.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Readme
  properties:
  - type: OpenAPI
    url: openapi/openaq-readme-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-sensors-api
  name: OpenAQ Sensors API
  description: The Sensors API from OpenAQ — 19 operation(s) for sensors.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Sensors
  properties:
  - type: OpenAPI
    url: openapi/openaq-sensors-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-sources-api
  name: OpenAQ Sources API
  description: The Sources API from OpenAQ — 3 operation(s) for sources.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Sources
  properties:
  - type: OpenAPI
    url: openapi/openaq-sources-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
- aid: openaq:openaq-summary-api
  name: OpenAQ Summary API
  description: The Summary API from OpenAQ — 1 operation(s) for summary.
  humanURL: https://openaq.org/
  baseURL: http://api.example.com
  tags:
  - Summary
  properties:
  - type: OpenAPI
    url: openapi/openaq-summary-api-openapi.yml
  - type: Documentation
    url: https://docs.openaq.org/
name: OpenAQ
tags:
- Data
- Data Quality
kind: contract
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: example-domain
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/openaq.png
common:
- type: CapabilityMap
  url: capabilities/openaq-capability-edges.yml
  name: OpenAQ Business Capability Map
- type: Plans
  url: plans/openaq-plans-pricing.yml
- type: RateLimits
  url: rate-limits/openaq-rate-limits.yml
- type: FinOps
  url: finops/openaq-finops.yml
- url: https://openaq.medium.com/feed
  type: BlogRSS
- type: Website
  url: https://openaq.org/
- type: AgenticAccess
  url: agentic-access/openaq-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/openaq-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/openaq-domain-security.yml
- type: Authentication
  url: authentication/openaq-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/openaq
- url: https://openaq.org/developers/platform-overview/
  type: Portal
- name: GitHub Organization
  url: https://github.com/openaq
  type: GitHubOrganization
- type: Integrations
  url: https://openaq.org/partners/
created: '2024-11-11'
modified: '2026-10-06'
description: OpenAQ is a non-profit organization that focuses on collecting and sharing air quality data from around the world.
  By providing access to this information through their open-source platform, OpenAQ aims to empower individuals, communities,
  and organizations to take action towards improving air quality and public health.
integrations:
- name: Aernode
- name: Air Gradient
- name: AirQo
- name: Airqoon
- name: Clarity
- name: Habitat Map
- name: IQAir
- name: Miri Africa
- name: Senstate
- name: Smart Sense
- name: Amazon Web Services
- name: Atmo
- name: Geocode Earth
- name: Up Here Media
- name: Africa Clean Air Network
- name: Earth Science Information Partners (ESIP)
- name: Fast Forward
- name: LAECESS
- name: One Percent for the Planet
- name: Open Data Charter
- name: Planetary Health Alliance
- name: UNICEF Children's Health Collaborative
- name: APAD
- name: Clean Air One Atmosphere
- name: Green Decision Labs
- name: Hikma Health
- name: Kenyatta University
- name: Love My Air
- name: Lovexair
- name: Project Phoenix
- name: UESD
- name: University of the Philippines-Manila
- name: Actions EBMF
- name: Clean Air Fund
- name: EPIC University of Chicago
- name: NASA
- name: Splunk
- name: The Godley Family Foundation
- name: Map of Quezon City, Philippines
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'
position: Consuming
access: 3rd-Party

OpenAQ API — frequently asked questions

Does OpenAQ have an API?

Yes. APIs.io lists 23 APIs from OpenAQ, including OpenAQ Averages API, OpenAQ Cities API and OpenAQ Countries API, and 20 more.

Is there an OpenAPI specification for the OpenAQ API?

Yes. APIs.io indexes 23 OpenAPI specifications for OpenAQ, each linked for download from this page.

How do I authenticate with the OpenAQ API?

OpenAQ uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as OpenAQ Authentication.

How much does the OpenAQ API cost?

APIs.io lists 3 pricing plans for OpenAQ, with each plan's price, limits and inclusions under Pricing on this page.

Is the OpenAQ API ready for AI agents?

OpenAQ has a Kin Score of 29.2 out of 100 (thin) and an Agent Readiness score of 27.6 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/openaq"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/openaq/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/openaq/evidence"

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