History data resolution

I've been consuming the csv from my weather station page and noticed it changed from 5 minute resolution to 30 minute resolution. In testing the REST API, as a better alternative, I see that this also uses 30 minute resolution.

I have several detailed reports and graphs which I've created for my website and the 30 minute resolution is not what I need. Is there an API where I can get history/daily data at a higher frequency than 30 minutes?

Thanks!