How handle large amount of data coming from sql?

[forna91]

Hello everyone, I'm planning to start my weather station and I will store data in mysql every 5 or 30mins:

This station will provide me actual Temperature, Humidity, Pressure, Sky brightness and Sky temperature.
And Rain Wind speed and direction in the last 30mins

Initially the query will be fast, but in the future I don't think,

There's a way to add an animation during the query is working??

How can I handle a large amount of data during the mounts??

Maybe I can solve doing a cron job that calculate the medium and min/max value of every day.

Hope you can help me