Open-Meteo website screenshot

Open-Meteo

Open-Meteo is an open-source weather API that provides free global weather forecasts, historical reanalysis data, marine conditions, air quality indexes, and long-range climate projections through a simple REST interface requiring no API key for non-commercial use. The service aggregates data from over 30 weather models provided by 15+ national meteorological services including ECMWF, NOAA GFS, DWD ICON, Météo-France, and JMA, delivering resolutions from 1 km to 11 km updated every 1 to 6 hours. Historical data extends back to 1940 via ERA5 reanalysis, giving developers and researchers access to consistent long-term climate records alongside real-time forecasts. Commercial users who need dedicated server capacity, higher throughput, and access to extended APIs such as ensemble forecasts, seasonal outlooks, satellite radiation, and climate change projections can subscribe to paid plans priced at a flat monthly rate with no per-call overage charges. The entire server infrastructure is open-source under the AGPLv3 license and can be self-hosted, while the underlying weather data is released under CC BY 4.0.

Open-Meteo publishes 9 APIs on the APIs.io network, including Air Quality APIs API, Climate Change APIs API, Elevation API API, and 6 more. Tagged areas include Weather, Forecasts, Historical Weather, Air Quality, and Marine.

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

Open-Meteo’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
46.5/100 developing ▼ -5.1 Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumOpen⚡ Free to try
10 APIs
WeatherForecastsHistorical WeatherAir QualityMarineClimateOpen SourceFree

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 46.5/100 · developing
Contract Quality 13.1 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 6.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 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/open-meteo: 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 10

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

Geocoding API

Converts place names and city searches into geographic coordinates and returns metadata such as country, timezone, population, and elevation to facilitate location lookup within...

Open-Meteo Air Quality APIs API

The Air Quality APIs API from Open-Meteo — 1 operation(s) for air quality apis.

Open-Meteo Climate Change APIs API

The Climate Change APIs API from Open-Meteo — 1 operation(s) for climate change apis.

Open-Meteo Elevation API API

The Elevation API API from Open-Meteo — 1 operation(s) for elevation api.

Open-Meteo Ensemble Forecast APIs API

The Ensemble Forecast APIs API from Open-Meteo — 1 operation(s) for ensemble forecast apis.

Open-Meteo Flood APIs API

The Flood APIs API from Open-Meteo — 1 operation(s) for flood apis.

Open-Meteo Historical Weather APIs API

The Historical Weather APIs API from Open-Meteo — 1 operation(s) for historical weather apis.

Open-Meteo Marine Weather APIs API

The Marine Weather APIs API from Open-Meteo — 1 operation(s) for marine weather apis.

Open-Meteo Seasonal Forecast APIs API

The Seasonal Forecast APIs API from Open-Meteo — 1 operation(s) for seasonal forecast apis.

Open-Meteo Weather Forecast APIs API

The Weather Forecast APIs API from Open-Meteo — 1 operation(s) for weather forecast apis.

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Open Meteo Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Open Meteo Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Open Meteo Finops

FINOPS

Semantic Vocabularies 1

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

Open Meteo Context

10 classes · 59 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Open-Meteo API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

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

Open-Meteo Air Quality Response

9 properties

JSON SCHEMA

Open-Meteo Error Response

2 properties

JSON SCHEMA

Open-Meteo Weather Response

11 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Open Meteo Air Quality Example

9 fields

EXAMPLE

Open Meteo Elevation Example

1 fields

EXAMPLE

Open Meteo Geocoding Example

2 fields

EXAMPLE

Open Meteo Weather Forecast Example

9 fields

EXAMPLE

Security Posture 1

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

Open Meteo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Open Meteo Agentic Access

9 operations

9 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 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

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 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: open-meteo
name: Open-Meteo
description: Open-Meteo is an open-source weather API that provides free global weather forecasts, historical reanalysis data,
  marine conditions, air quality indexes, and long-range climate projections through a simple REST interface requiring no
  API key for non-commercial use. The service aggregates data from over 30 weather models provided by 15+ national meteorological
  services including ECMWF, NOAA GFS, DWD ICON, Météo-France, and JMA, delivering resolutions from 1 km to 11 km updated every
  1 to 6 hours. Historical data extends back to 1940 via ERA5 reanalysis, giving developers and researchers access to consistent
  long-term climate records alongside real-time forecasts. Commercial users who need dedicated server capacity, higher throughput,
  and access to extended APIs such as ensemble forecasts, seasonal outlooks, satellite radiation, and climate change projections
  can subscribe to paid plans priced at a flat monthly rate with no per-call overage charges. The entire server infrastructure
  is open-source under the AGPLv3 license and can be self-hosted, while the underlying weather data is released under CC BY
  4.0.
type: Index
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Freemium · Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/open-meteo.png
url: https://raw.githubusercontent.com/api-evangelist/open-meteo/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Weather
- Forecasts
- Historical Weather
- Air Quality
- Marine
- Climate
- Open Source
- Free
apis:
- aid: open-meteo:geocoding-api
  name: Geocoding API
  description: Converts place names and city searches into geographic coordinates and returns metadata such as country, timezone,
    population, and elevation to facilitate location lookup within weather application workflows.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://open-meteo.com/en/docs/geocoding-api
  baseURL: https://geocoding-api.open-meteo.com
  tags:
  - Geocoding
  - Location
  properties:
  - type: Documentation
    url: https://open-meteo.com/en/docs/geocoding-api
- aid: open-meteo:open-meteo-air-quality-apis-api
  name: Open-Meteo Air Quality APIs API
  description: The Air Quality APIs API from Open-Meteo — 1 operation(s) for air quality apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Air Quality APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-air-quality-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-climate-change-apis-api
  name: Open-Meteo Climate Change APIs API
  description: The Climate Change APIs API from Open-Meteo — 1 operation(s) for climate change apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Climate Change APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-climate-change-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-elevation-api-api
  name: Open-Meteo Elevation API API
  description: The Elevation API API from Open-Meteo — 1 operation(s) for elevation api.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Elevation API
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-elevation-api-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-ensemble-forecast-apis-api
  name: Open-Meteo Ensemble Forecast APIs API
  description: The Ensemble Forecast APIs API from Open-Meteo — 1 operation(s) for ensemble forecast apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Ensemble Forecast APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-ensemble-forecast-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-flood-apis-api
  name: Open-Meteo Flood APIs API
  description: The Flood APIs API from Open-Meteo — 1 operation(s) for flood apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Flood APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-flood-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-historical-weather-apis-api
  name: Open-Meteo Historical Weather APIs API
  description: The Historical Weather APIs API from Open-Meteo — 1 operation(s) for historical weather apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Historical Weather APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-historical-weather-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-marine-weather-apis-api
  name: Open-Meteo Marine Weather APIs API
  description: The Marine Weather APIs API from Open-Meteo — 1 operation(s) for marine weather apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Marine Weather APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-marine-weather-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-seasonal-forecast-apis-api
  name: Open-Meteo Seasonal Forecast APIs API
  description: The Seasonal Forecast APIs API from Open-Meteo — 1 operation(s) for seasonal forecast apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Seasonal Forecast APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-seasonal-forecast-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
- aid: open-meteo:open-meteo-weather-forecast-apis-api
  name: Open-Meteo Weather Forecast APIs API
  description: The Weather Forecast APIs API from Open-Meteo — 1 operation(s) for weather forecast apis.
  humanURL: https://open-meteo.com/en/docs
  baseURL: https://api.open-meteo.com
  tags:
  - Weather Forecast APIs
  properties:
  - type: OpenAPI
    url: openapi/open-meteo-weather-forecast-apis-api-openapi.yml
  - type: Documentation
    url: https://open-meteo.com/en/docs
  - type: Documentation
    url: https://open-meteo.com/en/docs/historical-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/ensemble-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/climate-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/marine-weather-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/air-quality-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/flood-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/seasonal-forecast-api
  - type: Documentation
    url: https://open-meteo.com/en/docs/elevation-api
common:
- type: AgenticAccess
  url: agentic-access/open-meteo-agentic-access.yml
- type: DomainSecurity
  url: security/open-meteo-domain-security.yml
- type: Website
  url: https://open-meteo.com
- type: Documentation
  url: https://open-meteo.com/en/docs
- type: GitHubOrg
  url: https://github.com/open-meteo
- type: Blog
  url: https://openmeteo.substack.com
- type: Pricing
  url: https://open-meteo.com/en/pricing
- type: StatusPage
  url: https://status.open-meteo.com
- type: X
  url: https://x.com/open_meteo
- type: Plans
  url: plans/open-meteo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/open-meteo-rate-limits.yml
- type: FinOps
  url: finops/open-meteo-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com