The collection has one folder per tag and one request per operation, with the contract's examples filled in. The environment holds your key and the base URL.
Contract: openapi.yaml and the reference. Keys: the dashboard.
Step 1
Download both files from the repository:
weatherdata.postman_collection.jsonweatherdata.postman_environment.jsonIn Postman choose Import and select both files.
Step 2
Create a key in the dashboard. In Postman select the WeatherData API environment and paste the key into apiKey. The collection sends it as a Bearer token; /sources and /status send none. baseUrl defaults to https://api.weather-data.net/v1.
Step 3
A 401 means the key is missing or invalid; a 429 means the key's limit is exhausted and Retry-After says when to try again. See Test the API for the response shapes and the problem format.