Dark Sky website screenshot

Dark Sky

Dark Sky is a hyperlocal weather forecast REST API (now part of Apple) that provided minute-by-minute precipitation forecasts, hourly weather conditions, and multi-day outlooks powered by machine-learning models. The API delivered real-time and historical weather data for any latitude and longitude worldwide, including current conditions, 60-minute minutely precipitation intensity, 48-hour hourly forecasts, and 7-day daily summaries. It was acquired by Apple in March 2020; new developer signups closed immediately, and the API was permanently shut down on March 31, 2023. Apple's WeatherKit REST API is the successor service.

Dark Sky publishes 2 APIs on the APIs.io network: Forecast API and Time Machine API. Tagged areas include Weather, Forecast, Hyperlocal, Precipitation, and Machine Learning.

The Dark Sky catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Dark Sky’s developer surface includes authentication, documentation, engineering blog, pricing, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
0.0/100 minimal ▼ -38.7 Agent 0/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
AccessFreeSelf serve⚡ Free to try
1 APIs
WeatherForecastHyperlocalPrecipitationMachine LearningRESTApple

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 0.0/100 · minimal
Contract Quality 0.0 / 21
Developer Ergonomics 0.0 / 17
Access Clarity 0.0 / 17
Operational Transparency 0.0 / 11
Contract Governance 0.0 / 10
Discoverability 0.0 / 9
Regulatory Posture 2.3 / 15
Agent readiness — 0/100 · human only
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 7 / 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
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/.
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 github.com/api-evangelist/dark-sky: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Dark Sky Forecast API

Current and forecast weather data for a given location

Dark Sky Time Machine API

Historical or future weather data for a specific point in time

Open Collections 3

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

API Collection

OPEN COLLECTION

Dark Sky Forecast API

OPEN COLLECTION

Dark Sky Forecast Time Machine API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Dark Sky Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Dark Sky Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Dark Sky Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Dark Sky Context

0 classes · 46 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Dark Sky API Rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Dark Sky Forecast Response

10 properties

JSON SCHEMA

Examples 2

Example request and response payloads for these APIs.

Forecast Response

10 fields

EXAMPLE

Time Machine Response

8 fields

EXAMPLE

Security Posture 2

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

Dark Sky Authentication

apiKey · 1 scheme

SECURITY

Dark Sky Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Dark Sky Agentic Access

2 operations

2 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: dark-sky
name: Dark Sky
description: 'Dark Sky is a hyperlocal weather forecast REST API (now part of Apple) that provided minute-by-minute precipitation
  forecasts, hourly weather conditions, and multi-day outlooks powered by machine-learning models. The API delivered real-time
  and historical weather data for any latitude and longitude worldwide, including current conditions, 60-minute minutely precipitation
  intensity, 48-hour hourly forecasts, and 7-day daily summaries. It was acquired by Apple in March 2020; new developer signups
  closed immediately, and the API was permanently shut down on March 31, 2023. Apple''s WeatherKit REST API is the successor
  service.

  '
x-status: defunct
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://darksky.net
    status: 301
    note: declared website redirects to https://support.apple.com/en-us/102594 — a different registrable domain (darksky.net
      -> apple.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dark-sky.png
url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Weather
- Forecast
- Hyperlocal
- Precipitation
- Machine Learning
- REST
- Apple
tags_raw:
- Weather
- Forecast
- Hyperlocal
- Precipitation
- Machine Learning
- REST
- Apple
- Machine-Learning
apis:
- aid: dark-sky:dark-sky-forecast-api
  name: Dark Sky Forecast API
  description: Current and forecast weather data for a given location
  humanURL: https://darksky.net/dev/docs
  baseURL: https://api.darksky.net
  tags:
  - Forecast
  properties:
  - type: OpenAPI
    url: openapi/dark-sky-forecast-api-openapi.yml
  - type: Documentation
    url: https://darksky.net/dev/docs
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/json-schema/dark-sky-forecast-response.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/examples/forecast-response.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/examples/time-machine-response.json
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/vocabulary/dark-sky-vocabulary.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/json-ld/dark-sky-context.jsonld
- aid: dark-sky:dark-sky-time-machine-api
  name: Dark Sky Time Machine API
  description: Historical or future weather data for a specific point in time
  humanURL: https://darksky.net/dev/docs
  baseURL: https://api.darksky.net
  tags:
  - Time Machine
  properties:
  - type: OpenAPI
    url: openapi/dark-sky-time-machine-api-openapi.yml
  - type: Documentation
    url: https://darksky.net/dev/docs
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/json-schema/dark-sky-forecast-response.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/examples/forecast-response.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/examples/time-machine-response.json
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/vocabulary/dark-sky-vocabulary.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/dark-sky/refs/heads/main/json-ld/dark-sky-context.jsonld
common:
- type: AgenticAccess
  url: agentic-access/dark-sky-agentic-access.yml
- type: DomainSecurity
  url: security/dark-sky-domain-security.yml
- type: Authentication
  url: authentication/dark-sky-authentication.yml
- type: Website
  url: https://darksky.net
- type: Documentation
  url: https://darksky.net/dev/docs
- type: GitHubOrg
  url: https://github.com/darkskyapp
- type: LinkedIn
  url: https://www.linkedin.com/company/dark-sky
- type: Blog
  url: https://blog.darksky.net
- type: Pricing
  url: https://darksky.net/dev
- type: StatusPage
  url: https://darksky.net/dev/console
- type: X
  url: https://x.com/darkskyapp
- type: Plans
  url: plans/dark-sky-plans-pricing.yml
- type: RateLimits
  url: rate-limits/dark-sky-rate-limits.yml
- type: FinOps
  url: finops/dark-sky-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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