API with aggregated outdoor illuminance data

I’m looking for websites or services that collect and aggregate sensor data and provide it via an API. My goal is to control my lights based on outdoor illuminance.

I already have a few sensors at home, but they aren’t ideal for this purpose. They are partially affected by artificial lighting and highly sensitive to the solar azimuth. For example, in the afternoon, when the sun is low in the western sky, sensors might show much higher values than in the morning, even if the actual indoor light intensity is similar.

An API aggregating data from multiple sensors would smooth out these fluctuations and provide a more reliable input for controlling lights, blinds, etc.

Does anyone know of such a service? Thanks!