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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles OpenAQ the way a machine reads it — 60 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — OpenAQ scores 29.5/100 (thin), with a separate agent-readiness read of 30/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from OpenAQ's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/openaq/"
title="OpenAQ on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/openaq.svg"
alt="OpenAQ Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/openaq/)<!-- Kin Score · API Evangelist -->
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title="OpenAQ on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/openaq/card.svg"
alt="OpenAQ Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile OpenAQ
Each block below is one kind of artifact we hold for OpenAQ. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 23
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 23 ·
Open Collections 30
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONOpenAQ Averages API
OPEN COLLECTIONOpenAQ Averages Cities API
OPEN COLLECTIONOpenAQ Averages Countries API
OPEN COLLECTIONOpenAQ Averages Daily API
OPEN COLLECTIONOpenAQ Averages Days API
OPEN COLLECTIONOpenAQ Averages Flags API
OPEN COLLECTIONOpenAQ Averages Hourly API
OPEN COLLECTIONOpenAQ Averages Hours API
OPEN COLLECTIONOpenAQ Averages Instruments API
OPEN COLLECTIONOpenAQ Averages Latest API
OPEN COLLECTIONOpenAQ Averages Licenses API
OPEN COLLECTIONOpenAQ Averages Locations API
OPEN COLLECTIONOpenAQ Averages Manufacturers API
OPEN COLLECTIONOpenAQ Averages Measurements API
OPEN COLLECTIONOpenAQ Averages Monthly API
OPEN COLLECTIONOpenAQ Averages Owners API
OPEN COLLECTIONOpenAQ Averages Parameters API
OPEN COLLECTIONOpenAQ Averages Project API
OPEN COLLECTIONOpenAQ Averages Projects API
OPEN COLLECTIONOpenAQ Averages Providers API
OPEN COLLECTIONOpenAQ Averages Readme API
OPEN COLLECTIONOpenAQ Averages Sensor API
OPEN COLLECTIONOpenAQ Averages Sensors API
OPEN COLLECTIONOpenAQ Averages Slug API
OPEN COLLECTIONOpenAQ Averages Sources API
OPEN COLLECTIONOpenAQ Averages Summary API
OPEN COLLECTIONOpenAQ Averages Yearly API
OPEN COLLECTIONOpenAQ Averages Years API
OPEN COLLECTIONOpenAQ
OPEN COLLECTIONScroll within the panel for all 30 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Openaq Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Openaq Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Openaq Finops
FINOPSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for OpenAQ — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Company 2
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/openaq · machine-readable index on apis.io
This is an independent, third-party profile of OpenAQ, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.