Open-Meteo

Best for: Prototypes and side projects - free to start, no sales call; Teams needing broad API coverage out of the box; Cost-sensitive teams - low, transparent entry price

Avoid if: You have strict compliance requirements

• ██░░░░░░░░
  20 / 100
  Agent friendliness
• ██████████
  100 / 100
  Pricing transparency
• ████████▒░
  85 / 100
  Setup speed
• ██░░░░░░░░
  20 / 100
  Docs quality
• ██████████
  100 / 100
  Procurement ease
• ░░░░░░░░░░
  0 / 100
  Trust readiness

Scores are computed deterministically from this profile's published, sourced fields (pricing, compliance, capabilities, docs and developer-surface signals) - not from reviews or paid placement. Each axis is 0-100; an unknown signal scores 0 for that axis. Procurement ease is the inverse of buying friction (higher = easier to adopt).

Pricing model

Subscription [2]open-meteo.com/en/pricing“Fixed monthly price — no per-call overages or surprise charges”openmeteo.substack.com/p/api-subscriptions-for-commercial“$29 per month and provides 1 million API calls per month.”

Published pricing

✓ Yes [3]open-meteo.com/en/pricing“600 calls / min, 5.000 calls / hour, 10.000 calls / day, 300.000 calls / month”openmeteo.substack.com/p/api-subscriptions-for-commercial“$99 per month. This plan includes 5 million API calls per month and encompasses all the APIs available in the Standard Plan. Additionally, the Professional Plan provides exclusive access to the Historical Weather, Ensemble Forecast, and Climate Change APIs.”

Free tier

✓ Yes [4]open-meteo.com/en/terms“You may only use the free API services for non-commercial purposes.”open-meteo.com/en/pricing“600 calls / min, 5.000 calls / hour, 10.000 calls / day, 300.000 calls / month”open-meteo.com/en/docs“Only required to commercial use to access reserved API resources for customers.”

Free tier details

Non-commercial use is free with no API key required. Rate limits: 600 calls/minute, 5,000 calls/hour, 10,000 calls/day, 300,000 calls/month. Free tier includes all APIs: Weather Forecast, Air Quality, Elevation, Flood, Geocoding, Marine, Satellite Radiation, Historical Weather, Climate Change, Ensemble, and Seasonal Forecast APIs. No uptime guarantee on free tier. [5]open-meteo.com/en/pricing“600 calls / min, 5.000 calls / hour, 10.000 calls / day, 300.000 calls / month”open-meteo.com/en/terms“You may only use the free API services for non-commercial purposes.”

Self-serve signup

✓ Yes [6]open-meteo.com/en/about“Open-Meteo is an open-source weather API and offers free access for non-commercial use.”open-meteo.com/en/pricing“Payments via Stripe; manage subscriptions in customer portal.”

Requires sales call

✗ No [7]open-meteo.com/en/pricing“Payments via Stripe; manage subscriptions in customer portal.”

Enterprise plan

✓ Yes [8]openmeteo.substack.com/p/api-subscriptions-for-commercial“Contact info@open-meteo.com for custom volume or enterprise contracts.”open-meteo.com/en/pricing“Commercial use: ✅, Monthly budget: >50M calls / month, All features included, Custom Solutions and Priority Support available”

• Forecast
• Historical data
• Marine
• Air quality

Supported actions

forecast, historical_weather, historical_forecast, previous_runs, single_runs, ensemble_forecast, seasonal_forecast, climate_change_projections, marine_forecast, air_quality, flood_forecast, satellite_radiation, geocoding, elevation [9]open-meteo.com/en/docs“The API endpoint /v1/forecast accepts a geographical coordinate, a list of weather variables and responds with a JSON hourly weather forecast for 16 days.”open-meteo.com/en/docs/flood-api“The API endpoint /v1/flood accepts a geographical coordinate and returns river discharge data from the largest river in a 5 km area for the given coordinates.”open-meteo.com/en/docs/air-quality-api“The API endpoint /v1/air-quality accepts a geographical coordinate, a list of weather variables and responds with a JSON hourly air quality forecast for 5 days.”

Regions

global, Central Europe (15-minutely resolution), North America (15-minutely resolution), Germany (DWD ICON), USA (NOAA GFS/HRRR), France (Météo-France), EU (ECMWF), UK (Met Office), Korea (KMA), Japan (JMA), Switzerland (MeteoSwiss), Norway (MET), Canada (GEM), Australia (BOM), China (CMA), Netherlands (KNMI), Denmark (DMI), Italy (ItaliaMeteo), Austria (GeoSphere) [10]open-meteo.com/en/features“15-minutely data is available for Central Europe and North America, interpolated from hourly model output elsewhere.”open-meteo.com/en/features“30+ Weather Models integrated from over 15 national weather services, including ECMWF, DWD, NOAA, Météo-France, JMA, KMA, KNMI, DMI, MeteoSwiss, UK Met Office, BOM, CMA, and GeoSphere Austria.”

Languages

English

Input types

latitude/longitude (WGS84), location name (string), postal code, ISO 8601 date range, forecast days parameter, past days parameter [11]open-meteo.com/en/docs/historical-weather-api“A day must be specified as an ISO8601 date (e.g. 2022-12-31).”open-meteo.com/en/docs“Simple JSON API — HTTP GET, no authentication, CC BY 4.0 data licence”

Output types

JSON, CSV, XLSX, Protobuf (geocoding API only) [12]open-meteo.com/en/docs/geocoding-api“By default, results are returned as JSON. Alternatively, protobuf is supported for more efficient encoding and transfer.”open-meteo.com/en/docs“CSV and XLSX formats add a column location_id when multiple locations are queried.”

Webhooks

✗ No [13]open-meteo.com/en/docs“Simple JSON API — HTTP GET, no authentication, CC BY 4.0 data licence”

Sandbox / test mode

✗ No [14]open-meteo.com/en/docs“Only required to commercial use to access reserved API resources for customers.”

SDK languages

Python, TypeScript, Kotlin, C#/.NET, Go, Rust, Dart/Flutter, R [15]github.com/open-meteo/open-meteo“SDKs available in: .Net/C#, Dart/Flutter, Go, Kotlin, PHP, Python, R, Rust, and TypeScript.”github.com/open-meteo/python-requests“This library provides access to weather data from the Open-Meteo Weather API. It uses FlatBuffers instead of JSON for efficient data transfer and supports Zero-Copy data handling with numpy, pandas, and polars.”

MCP server

✗ No [16]github.com/open-meteo/open-meteo“Free Weather Forecast API for non-commercial use”

SOC 2

– Unknown

HIPAA

– Unknown

GDPR

– Unknown [17]open-meteo.com/en/terms“All log files will be deleted after a period of 90 days.”

ISO 27001

– Unknown

PCI DSS

– Unknown

Published SLA

✗ No [18]open-meteo.com/en/terms“No explicit GDPR compliance statements, uptime guarantees, or compliance certifications.”open-meteo.com/en/pricing“99.9% uptime target for paid plans on reserved servers”

Rate limits

Free tier: 600 calls/minute, 5,000 calls/hour, 10,000 calls/day, 300,000 calls/month. Paid plans (Standard and Professional): unlimited rate limits. Terms disclaim uptime guarantees; pricing page notes a 99.9% uptime target for paid reserved servers only. [19]open-meteo.com/en/terms“Less than 10'000 API calls per day, 5'000 per hour and 600 per minute.”open-meteo.com/en/pricing“600 calls / min, 5.000 calls / hour, 10.000 calls / day, 300.000 calls / month”

Known restrictions

Free tier is non-commercial use only - prohibited uses include subscriptions, advertising, commercial products, Data licensed under CC BY 4.0 - attribution required, Enterprise plan requires contacting info@open-meteo.com for custom pricing, 15-minutely resolution data only available in Central Europe and North America, Free tier has no uptime guarantee [20]open-meteo.com/en/terms“The data obtained through the API is provided under the terms of the CC-BY 4.0 licence.”open-meteo.com/en/terms“Operating websites or apps that have subscriptions or display advertisements and Integrating our service into commercial products or promotional activities.”open-meteo.com/en/features“15-minutely data is available for Central Europe and North America, interpolated from hourly model output elsewhere.”

• API reference
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.open-meteo.com/v1

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key

Error format

vendor-specific JSON: {"error": true, "reason": "<description>"} with HTTP 400

Rate limit

600 / minute

SDKs

• Python openmeteo-requests · repo
• TypeScript openmeteo · repo
• Kotlin open-meteo-api-kotlin · repo
• C#/.NET open-meteo-dotnet-client-sdk · repo
• Go omgo · repo
• Rust open-meteo-rs · repo
• Dart/Flutter open-meteo-dart · repo
• R openmeteo · repo

• Auth docs
• Quickstart

Launched

2022-01-01

GA

2024-01-11

Notable customers

Home Assistant

• OpenWeather

  "Build smarter, plan better with the world's most flexible weather data platform"

  Hybrid · free tier · public pricing · self-serve

• Visual Crossing Weather API

  "The World's Most Comprehensive Weather API for Businesses and Developers."

  Hybrid · free tier · public pricing · self-serve

• WeatherAPI.com

  "The ultimate weather and geolocation API trusted by 850,000+ users worldwide"

  Subscription · free tier · public pricing · self-serve

• Meteosource

  "Real-time, forecast & historical accurate data" provided through a Global Weather API leveraging machine learning models for "best-in-class accuracy."

  Subscription · free tier · public pricing · self-serve

• Google Weather API (Google Maps Platform)

  "The Weather API provides comprehensive weather information - including temperature, precipitation, wind, cloud cover, and more - for locations across the globe."

  Usage · free tier · public pricing · self-serve

• Weatherbit

  "The High Performance Weather API for All of Your Data Needs"

  Subscription · free tier · public pricing · self-serve

Open-Meteo alternatives · Open-Meteo vs OpenWeather · All Weather APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: open-meteo.com · open-meteo.com
2. ↑Pricing model: open-meteo.com · openmeteo.substack.com
3. ↑Published pricing: open-meteo.com · openmeteo.substack.com
4. ↑Free tier: open-meteo.com · open-meteo.com · open-meteo.com
5. ↑Free tier details: open-meteo.com · open-meteo.com
6. ↑Self-serve signup: open-meteo.com · open-meteo.com
7. ↑Requires sales call: open-meteo.com
8. ↑Enterprise plan: openmeteo.substack.com · open-meteo.com
9. ↑Supported actions: open-meteo.com · open-meteo.com · open-meteo.com
10. ↑Regions: open-meteo.com · open-meteo.com
11. ↑Input types: open-meteo.com · open-meteo.com
12. ↑Output types: open-meteo.com · open-meteo.com
13. ↑Webhooks: open-meteo.com
14. ↑Sandbox: open-meteo.com
15. ↑SDK languages: github.com · github.com
16. ↑MCP server: github.com
17. ↑GDPR: open-meteo.com
18. ↑Published SLA: open-meteo.com · open-meteo.com
19. ↑Rate limits: open-meteo.com · open-meteo.com
20. ↑Known restrictions: open-meteo.com · open-meteo.com · open-meteo.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-15 Score Agent Friendliness: 10 → 20
2. 2026-06-15 Score Docs Quality: 0 → 20
3. 2026-06-14 API Reference URL: (none) → https://open-meteo.com/en/docs
4. 2026-06-14 Robots Allows Agents: (none) → Yes
5. 2026-06-14 Has Structured Data: (none) → No
6. 2026-06-14 Capabilities: {} → {"marine":true,"forecast":true,"historical":true,"air_quality":true}
7. 2026-06-14 Summary Md: (none) → Open-Meteo is an open-source weather API providing forecasts, historical data b…
8. 2026-06-14 Llms Txt Present: (none) → No
9. 2026-06-14 Rendering: (none) → static
10. 2026-06-14 Status Page URL: (none) → https://status.open-meteo.com
11. 2026-06-14 Score Setup Speed: (none) → 85
12. 2026-06-14 Score Pricing Transparency: (none) → 100
13. 2026-06-14 Avoid If: (none) → You have strict compliance requirements
14. 2026-06-14 Best For: (none) → Prototypes and side projects - free to start, no sales call, Teams needing broa…
15. 2026-06-14 Score Trust Readiness: (none) → 0
16. 2026-06-14 Score Procurement Friction: (none) → 100
17. 2026-06-14 Score Docs Quality: (none) → 0
18. 2026-06-14 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
19. 2026-06-14 Score Agent Friendliness: (none) → 10
20. 2026-06-14 Has Published Pricing: set to Yes
21. 2026-06-14 Free Tier Available: set to Yes
22. 2026-06-14 Free Tier Details: set to Non-commercial use is free with no API key required. Rate limits: 600 calls/min…
23. 2026-06-14 Self Serve Signup: set to Yes
24. 2026-06-14 Requires Sales Call: set to No
25. 2026-06-14 Enterprise Plan Available: set to Yes
26. 2026-06-14 SLA Published: set to No
27. 2026-06-14 Data Retention Policy URL: set to https://open-meteo.com/en/terms
28. 2026-06-14 Documented Rate Limits: set to Free tier: 600 calls/minute, 5,000 calls/hour, 10,000 calls/day, 300,000 calls/…
29. 2026-06-14 Rate Limit Requests: set to 600
30. 2026-06-14 Rate Limit Window: set to minute
31. 2026-06-14 Known Restrictions: set to Free tier is non-commercial use only - prohibited uses include subscriptions, a…
32. 2026-06-14 Auth Methods: set to api_key
33. 2026-06-14 Base URL: set to https://api.open-meteo.com/v1
34. 2026-06-14 API Version: set to v1
35. 2026-06-14 Versioning Scheme: set to url
36. 2026-06-14 Stability: set to ga
37. 2026-06-14 Quickstart URL: set to https://open-meteo.com/en/docs
38. 2026-06-14 Error Format: set to vendor-specific JSON: {"error": true, "reason": "<description>"} with HTTP 400
39. 2026-06-14 Requires Verification: set to No
40. 2026-06-14 Starting Price Usd: set to 29
41. 2026-06-14 Price Basis: set to month
42. 2026-06-14 Free Tier Limit: set to 600 calls/min, 10,000 calls/day, 300,000 calls/month; non-commercial use only
43. 2026-06-14 API Style: set to rest
44. 2026-06-14 GA Date: set to 2024-01-11
45. 2026-06-14 Notable Customers: set to Home Assistant
46. 2026-06-14 Fields Not Found: set to soc2, hipaa, gdpr, iso_27001, pci_dss, exact Enterprise plan monthly price (con…
47. 2026-06-14 Source Confidence: set to high
48. 2026-06-14 Extractor: set to claude-subagent:sonnet
49. 2026-06-14 Last Verified At: set to 2026-06-14T00:00:00.000Z
50. 2026-06-14 Status: set to published

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/open-meteo \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/open-meteo/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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