Home › Weather › Free Weather Api
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
A free weather API is a programming interface that lets you pull current conditions, forecasts, and historical data without paying a subscription fee. For Canadians, the best free weather API is Environment and Climate Change Canada’s open data service, which provides raw observations and alerts at no cost—ideal for hobbyists, small apps, or local projects.
What is a free weather API and how does it work?
A free weather API (application programming interface) allows developers to request weather data—like temperature, wind speed, or precipitation—from a server using a simple URL or code call. Most free APIs require a weather API key to track usage, though some, like ECCC’s, are keyless for basic access. The live forecast above, for example, could be powered by such an API, pulling real-time conditions for your location.
Which free weather API works best in Canada?
For Canadian data, the best free weather API is Environment and Climate Change Canada’s Datamart, offering XML and CSV feeds from over 1,500 stations. If you need global coverage, OpenWeatherMap’s free tier (60 calls per minute) is popular, but its Canadian data is less precise. For a free weather API Canada option, ECCC is the most reliable and authoritative source.
Can I use a free weather API without a key?
Yes—Environment and Climate Change Canada’s Datamart offers open data without a key. For other APIs like OpenWeatherMap, a key is mandatory even on free plans to prevent abuse.
Is there a free weather API on GitHub?
Yes, many developers share wrappers for free APIs on GitHub. Search for “free weather api github” to find Python or JavaScript libraries that simplify calls to ECCC or OpenWeatherMap.
Does Google offer a free weather API?
Google’s Weather API is part of the Maps Platform and is not free—it charges per request. For a no-cost alternative, use ECCC’s open data or OpenWeatherMap’s free tier.
Sources
For more local forecasts, check our Canada weather hub or specific city pages like Toronto Weather and Vancouver Weather. If you’re building an app, consider pairing a free API with our Weather Warning page for alert data.