Solar type sensors

Another part of the wunderground API is solar data. 

I tried to do this in the past, but the weather got to the sensors. They need to be in a good glass enclosure where they can see the sky.

Ideally they would use I2C.

I probably won't get around to this until I am off of school at the end of this year, or the summer of 2018.

Data fields: 

solarradiation - [W/m^2]
UV - [index]