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I'm wanting to create a smart contract that sends an amount of ether to an address when the weather is above 30 degrees for 3 or more consecutive days, using the OpenWeatherMap API.

How can I use data from an API in a smart contract?

Thanks in advance..

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Ethreum virtual machine (EVM) does not has access to the external network due to the fact that all the transactions must be deterministic.

You need to create an oracle service that reads an external API and feeds this information to the Ethereum smart contracts in a trusted manner.

Here is more background inform,ation How do oracle services work under the hood?

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