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Open-Meteo API vs Weatherstack API

Two free Weather APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

  • Choose Open-Meteo API if you want to start without an API key, to call it from browser JavaScript.
  • Choose Weatherstack API for its data: Real-Time & Historical World Weather Data API.

Side by side

Open-Meteo APIWeatherstack API
What it doesGlobal weather forecast API for non-commercial use.Real-Time & Historical World Weather Data API.
ProviderOpen-Meteo.comWeatherstack
API keyNot neededRequired
HTTPSYesYes
CORS (browser calls)YesUnknown
Status todayOnline · 522 msOnline · 739 ms
Uptime (30 days)UpUp
Developer ratingNot rated yetNot rated yet
PriceFree / free tierFree / free tier
Open-Meteo docs ↗Weatherstack docs ↗

About each API

Open-Meteo logoOpen-Meteo API

Global weather forecast API for non-commercial use.

Open-Source ☀️ Weather API with free access for non-commercial use. No API Key required ✅. Accurate weather forecasts for any location. Open-Meteo provides high-resolution open data ranging from 1 to 11 kilometres from national weather services. With a user-friendly JSON API, integrating weather da…

Strengths

  • No API key needed
  • Callable from the browser (CORS)
  • HTTPS

Ratings, reviews and FAQ →

Weatherstack logoWeatherstack API

Real-Time & Historical World Weather Data API.

Get current weather information, historical data and forecasts using weatherstack - a free world weather REST API supporting millions of global locations.

Strengths

  • HTTPS

Ratings, reviews and FAQ →

How to choose between them

  • Prototyping or a tutorial? Pick the one that needs no API key.
  • Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
  • Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
  • Still unsure? Both are free to try: send one request to each and compare the data you get back.

Open-Meteo vs Weatherstack FAQ

Which needs an API key, Open-Meteo API or Weatherstack API?

Weatherstack API requires an API key; Open-Meteo API doesn't, so Open-Meteo API is quicker to try.

Which can I call from the browser?

Open-Meteo API supports CORS, so front-end JavaScript can call it directly. Call the other from a server.

More comparisons

Open-Meteo API alternatives · Weatherstack API alternatives · best Weather APIs