Someone used/knows/opine this UV sensor from Silicon Labs. It seems it gives directly the number you must know to know if you are exposed to deadly sun …and it is not so expensive
And is I2C
This device seems to be ok! I have the same but with an analog output. I prefer this device that is using I2C, so you do not have to care about ADC resolution, voltages, etc. I think I will update my sensor with a similar one