Weather Underground website screenshot

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 Forecasts.

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
49.1/100 developing ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreeSelf serve⚡ Free to try
4 APIs
WeatherPersonal Weather StationsHyperlocalObservationsForecastsHistorical DataREST API

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 49.1/100 · developing
Contract Quality 17.0 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 5.5 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 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 0 / 4
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.

Weather Underground Forecast API

Weather forecasts based on PWS location

Weather Underground Historical API

Historical PWS observations and daily summaries

Weather Underground Location API

PWS station location lookup

Weather Underground Observations API

Current and real-time PWS observations

Pricing Plans 1

Published pricing tiers and plan structures.

Wunderground Plans Pricing

1 plans

PLANS

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.

Wunderground Finops

FINOPS

Semantic Vocabularies 1

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

Wunderground Context

0 classes · 66 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Weather Underground API Rules

5 rules · 3 warnings 2 info

SPECTRAL

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.

5 Day Forecast

17 fields

EXAMPLE

Current Observations

1 fields

EXAMPLE

Daily Summary

1 fields

EXAMPLE

Security Posture 3

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

Wunderground Authentication

apiKey · 1 scheme

SECURITY

Wunderground Domain Security

TLSv1.3 · DMARC

SECURITY

Wunderground Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Wunderground Agentic Access

8 operations

8 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 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
LinkedIn
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
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: '0.19'
tags:
- 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