Clean Air Data

Clean Air Data provides independent air quality rankings for over 1,000 U.S. cities using EPA monitoring data from 2021‑2025. Users can search current AQI, view historical trends, compare cities, and access detailed PM2.5 scores and other metrics to understand local air quality conditions.

Clean Air Data publishes 1 API contract indexed on the APIs.io network. Tagged areas include Air Quality, Data, EPA, US Cities, and Rankings.

The Clean Air Data catalog on APIs.io includes 1 Spectral governance ruleset.

Clean Air Data’s developer surface includes engineering blog and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

11.0/100 emerging Agent 4/100 human only Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

2 published contracts 1 MCP Servers

Air Quality Data EPAUS CitiesRankings

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 11.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 0.2 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.2 / 15

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 0 / 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 3 / 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 1.2 — up to +19.8 composite points
Access Clarity scores 10.5 — up to +17.9 composite points

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.

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/cleanairdata-org/apis.yml: open an issue on github.com/api-evangelist/cleanairdata-org 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 →

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

CleanAirData Current AQI API

Pilot documentation for the existing current AQI endpoint and the read-only MCP endpoint.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Clean Air Data MCP Server

Remote MCP server at cleanairdata.org.

MCP SERVER

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Clean Air Data API Rules

30 rules · 28 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Cleanairdata Org Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Conformance

Conformance

ErrorCatalog

ErrorCatalog

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cleanairdata-org
name: Clean Air Data
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://cleanairdata.org/social-og.png
description: Clean Air Data provides independent air quality rankings for over 1,000 U.S. cities using EPA monitoring data
  from 2021‑2025. Users can search current AQI, view historical trends, compare cities, and access detailed PM2.5 scores and
  other metrics to understand local air quality conditions.
url: https://artifacts.apis.io/cleanairdata-org/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- Air Quality
- Data
- EPA
- US Cities
- Rankings
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/cleanairdata-org-rules.yml
- type: Conformance
  url: conformance/cleanairdata-org-conformance.yml
- type: ErrorCatalog
  url: errors/cleanairdata-org-problem-types.yml
- type: LLMsTxt
  url: llms/cleanairdata-org-llms.txt
- type: MCPServer
  url: mcp/cleanairdata-org-mcp.yml
- type: Hosts
  url: hosts/cleanairdata-org-hosts.yml
- type: Vendors
  url: vendors/cleanairdata-org-vendors.yml
- type: TermsOfService
  url: https://cleanairdata.org/terms
- type: PrivacyPolicy
  url: https://cleanairdata.org/privacy
- type: Blog
  url: https://cleanairdata.org/blog
- type: DomainSecurity
  url: security/cleanairdata-org-domain-security.yml
- type: Website
  url: https://cleanairdata.org/
apis:
- name: CleanAirData Current AQI API
  description: Pilot documentation for the existing current AQI endpoint and the read-only MCP endpoint.
  humanURL: https://cleanairdata.org/api
  baseURL: https://cleanairdata.org
  aid: cleanairdata-org:cleanairdata-current-aqi-api
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 14
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Clean Air Data API — frequently asked questions

Does Clean Air Data have an API?

Yes. APIs.io lists 1 API from Clean Air Data, including CleanAirData Current AQI API.

Does Clean Air Data have an MCP server?

Yes. APIs.io lists 1 MCP server for Clean Air Data: Remote MCP server at cleanairdata.org.

Is the Clean Air Data API ready for AI agents?

Clean Air Data has a Kin Score of 11.0 out of 100 (emerging) and an Agent Readiness score of 4.2 (human-only), scored by API Evangelist on 2026-11-06.

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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.

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