Weather Underground

Weather Underground operates a personal weather station network of 250,000+ stations worldwide, providing hyperlocal weather data via a REST API. The PWS API (hosted at api.weather.com) offers authenticated access to current conditions, historical observations, 5-day forecasts, and location lookup for registered station contributors. API keys are free for PWS owners who upload data to the network.

Weather Underground publishes 4 APIs on the APIs.io network, including Forecast API, Historical API, Location API, and 1 more. Tagged areas include Weather, Personal Weather Stations, Hyperlocal, Observations, and Forecast.

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

Weather Underground’s developer surface includes authentication, documentation, engineering blog, pricing, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.8/100 developing ▬ flat Agent 26/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreeSelf serve⚡ Free to try

4 APIs

WeatherPersonal Weather StationsHyperlocal Observations Forecast Historical Data REST API

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 41.8/100 · developing

Contract Quality 15.1 / 25

Developer Ergonomics 4.8 / 20

Access Clarity 7.9 / 20

Operational Transparency 5.5 / 13

Contract Governance 1.2 / 12

Discoverability 7.4 / 10

Agent readiness — 26/100 · 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 0 / 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 Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/wunderground: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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

Rate Limits 1

Documented rate limits and quota policies.

Wunderground Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

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

PWS Observation

20 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

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 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

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

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: wunderground
name: Weather Underground
description: 'Weather Underground operates a personal weather station network of 250,000+ stations worldwide, providing hyperlocal
  weather data via a REST API. The PWS API (hosted at api.weather.com) offers authenticated access to current conditions,
  historical observations, 5-day forecasts, and location lookup for registered station contributors. API keys are free for
  PWS owners who upload data to the network.

  '
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wunderground.png
url: https://raw.githubusercontent.com/api-evangelist/wunderground/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Weather
- Personal Weather Stations
- Hyperlocal
- Observations
- Forecast
- Historical Data
- REST API
tags_raw:
- Weather
- Personal Weather Stations
- Hyperlocal
- Observations
- Forecasts
- Historical Data
- REST API
apis:
- aid: wunderground:wunderground-forecast-api
  name: Weather Underground Forecast API
  description: Weather forecasts based on PWS location
  humanURL: https://www.wunderground.com/member/api-keys
  baseURL: https://api.weather.com
  tags:
  - Forecast
  properties:
  - type: OpenAPI
    url: openapi/wunderground-forecast-api-openapi.yml
  - type: Documentation
    url: https://www.wunderground.com/member/api-keys
- aid: wunderground:wunderground-historical-api
  name: Weather Underground Historical API
  description: Historical PWS observations and daily summaries
  humanURL: https://www.wunderground.com/member/api-keys
  baseURL: https://api.weather.com
  tags:
  - Historical
  properties:
  - type: OpenAPI
    url: openapi/wunderground-historical-api-openapi.yml
  - type: Documentation
    url: https://www.wunderground.com/member/api-keys
- aid: wunderground:wunderground-location-api
  name: Weather Underground Location API
  description: PWS station location lookup
  humanURL: https://www.wunderground.com/member/api-keys
  baseURL: https://api.weather.com
  tags:
  - Location
  properties:
  - type: OpenAPI
    url: openapi/wunderground-location-api-openapi.yml
  - type: Documentation
    url: https://www.wunderground.com/member/api-keys
- aid: wunderground:wunderground-observations-api
  name: Weather Underground Observations API
  description: Current and real-time PWS observations
  humanURL: https://www.wunderground.com/member/api-keys
  baseURL: https://api.weather.com
  tags:
  - Observations
  properties:
  - type: OpenAPI
    url: openapi/wunderground-observations-api-openapi.yml
  - type: Documentation
    url: https://www.wunderground.com/member/api-keys
common:
- type: AgenticAccess
  url: agentic-access/wunderground-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/wunderground-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/wunderground-domain-security.yml
- type: Authentication
  url: authentication/wunderground-authentication.yml
- type: Website
  url: https://www.wunderground.com
- type: Documentation
  url: https://www.wunderground.com/member/api-keys
- type: GitHubOrg
  url: https://github.com/topics/wunderground-api
- type: LinkedIn
  url: https://www.linkedin.com/company/wunderground-llc
- type: Blog
  url: https://www.wunderground.com/blog
- type: Pricing
  url: https://www.wunderground.com/member/api-keys
- type: StatusPage
  url: https://uptime.com/wunderground.com
- type: X
  url: https://x.com/wunderground
- type: Plans
  url: plans/wunderground-plans-pricing.yml
- type: RateLimits
  url: rate-limits/wunderground-rate-limits.yml
- type: FinOps
  url: finops/wunderground-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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/wunderground"

All providers

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

Every operation they expose

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

How their score was established

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

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.