openSenseMap

Data from Personal Weather Stations called senseBoxes

WeatherAuth: NoneHTTPS: YesCORS: yesStatus: dead

Last verified: April 1, 2026

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Getting Started

This API requires no authentication — you can start making requests immediately with no sign-up or API key needed.

Find the endpoint — Check the API's documentation for available endpoints and what data they return.
Make a request — Use fetch() in JavaScript, curl in your terminal, or any HTTP client to call the API.
Use the data — The API will return data (usually JSON) that you can parse and use in your application.

No-auth APIs are the easiest to get started with — perfect for learning, prototyping, and building side projects.

CORS Support

This API supports CORS (Cross-Origin Resource Sharing), meaning you can call it directly from browser-based JavaScript applications without running into cross-origin errors.

Quick Example

// Using cURL
curl https://api.opensensemap.org/

// Using JavaScript fetch()
const response = await fetch(apiUrl);
const data = await response.json();

About openSenseMap

openSenseMap is a free, no-authentication API in the Weather category. You can start using it immediately without creating an account or obtaining an API key — just send an HTTP request and receive data back. This API supports HTTPS for secure connections and supports CORS, making it suitable for direct browser-based requests.

Frequently Asked Questions

What weather data does openSenseMap provide?

openSenseMap is a weather API that can provide meteorological data such as temperature, humidity, wind speed, precipitation, and forecasts. The exact data fields depend on the API's endpoints — check the documentation for a full list of available weather parameters. Many weather APIs also provide UV index, air quality, and severe weather alerts.

Can I get historical weather data from openSenseMap?

Historical weather data availability varies by API. Some weather APIs like openSenseMap offer historical records going back years, while others focus only on current conditions and forecasts. Check the API documentation to see if historical endpoints are available and whether they require a different plan or rate limit.

How accurate are the forecasts from openSenseMap?

Weather API accuracy depends on the data sources the provider uses (e.g., government stations, satellites, radar). Short-term forecasts (1-3 days) are generally reliable across most weather APIs, while extended forecasts become less accurate. openSenseMap may source data from national weather services or proprietary models — see their documentation for details on data sources and update frequency.

Does openSenseMap support location-based weather lookups?

Most weather APIs support lookups by geographic coordinates (latitude/longitude), city name, or zip code. openSenseMap likely supports at least one of these methods. Coordinate-based lookups tend to be the most precise. Check the Weather category for other weather APIs if you need a specific lookup method.

Is openSenseMap free to use?

Yes, openSenseMap is listed as a free public API. It requires no sign-up or API key — you can start making requests immediately. Some APIs have rate limits on their free tier, so check the official documentation for current limits.

Is openSenseMap still working in 2026?

Our most recent health check indicates openSenseMap may be down or unreachable. It could be temporarily offline or permanently discontinued. Check the official website for status updates and consider browsing alternatives in the same category.