

Assesses weather condition in specific locations.
Yandex.Weather API is a free Weather API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
Finds everything
Details from yandex.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Current weather, local time, UTC offset and DST rules for 400 cities as static JSON
Yes. The Yandex.Weather API is listed in the Weather category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Yandex.Weather API uses apiKey authentication, so you need to register for credentials before making requests.
Not directly. The Yandex.Weather API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The Yandex.Weather API is served over HTTPS, so it's safe to use in production.